diff --git a/recipes/ljspeech/align_tts/train_aligntts.py b/recipes/ljspeech/align_tts/train_aligntts.py
index 68b67d66..d0187aa8 100644
--- a/recipes/ljspeech/align_tts/train_aligntts.py
+++ b/recipes/ljspeech/align_tts/train_aligntts.py
@@ -1,9 +1,11 @@
 import os
 
 from TTS.trainer import Trainer, TrainingArgs
-from TTS.tts.configs.align_tts_config import AlignTTSConfig, BaseDatasetConfig
+from TTS.tts.configs.align_tts_config import AlignTTSConfig
+from TTS.tts.configs.shared_configs import BaseDatasetConfig
 from TTS.tts.datasets import load_tts_samples
 from TTS.tts.models.align_tts import AlignTTS
+from TTS.tts.utils.text.tokenizer import TTSTokenizer
 from TTS.utils.audio import AudioProcessor
 
 output_path = os.path.dirname(os.path.abspath(__file__))
@@ -31,23 +33,32 @@ config = AlignTTSConfig(
     datasets=[dataset_config],
 )
 
-# init audio processor
-ap = AudioProcessor(**config.audio.to_dict())
+# INITIALIZE THE AUDIO PROCESSOR
+# Audio processor is used for feature extraction and audio I/O.
+# It mainly serves to the dataloader and the training loggers.
+ap = AudioProcessor.init_from_config(config)
 
-# load training samples
+# INITIALIZE THE TOKENIZER
+# Tokenizer is used to convert text to sequences of token IDs.
+# If characters are not defined in the config, default characters are passed to the config
+tokenizer, config = TTSTokenizer.init_from_config(config)
+
+# LOAD DATA SAMPLES
+# Each sample is a list of ```[text, audio_file_path, speaker_name]```
+# You can define your custom sample loader returning the list of samples.
+# Or define your custom formatter and pass it to the `load_tts_samples`.
+# Check `TTS.tts.datasets.load_tts_samples` for more details.
 train_samples, eval_samples = load_tts_samples(dataset_config, eval_split=True)
 
 # init model
-model = AlignTTS(config)
+model = AlignTTS(config, ap, tokenizer)
 
-# init the trainer and 🚀
+# INITIALIZE THE TRAINER
+# Trainer provides a generic API to train all the 🐸TTS models with all its perks like mixed-precision training,
+# distributed training, etc.
 trainer = Trainer(
-    TrainingArgs(),
-    config,
-    output_path,
-    model=model,
-    train_samples=train_samples,
-    eval_samples=eval_samples,
-    training_assets={"audio_processor": ap},
+    TrainingArgs(), config, output_path, model=model, train_samples=train_samples, eval_samples=eval_samples
 )
+
+# AND... 3,2,1... 🚀
 trainer.fit()
diff --git a/recipes/ljspeech/fast_pitch/train_fast_pitch.py b/recipes/ljspeech/fast_pitch/train_fast_pitch.py
index 0a4a965b..3a772251 100644
--- a/recipes/ljspeech/fast_pitch/train_fast_pitch.py
+++ b/recipes/ljspeech/fast_pitch/train_fast_pitch.py
@@ -5,6 +5,7 @@ from TTS.trainer import Trainer, TrainingArgs
 from TTS.tts.configs.fast_pitch_config import FastPitchConfig
 from TTS.tts.datasets import load_tts_samples
 from TTS.tts.models.forward_tts import ForwardTTS
+from TTS.tts.utils.text.tokenizer import TTSTokenizer
 from TTS.utils.audio import AudioProcessor
 from TTS.utils.manage import ModelManager
 
@@ -46,9 +47,9 @@ config = FastPitchConfig(
     epochs=1000,
     text_cleaner="english_cleaners",
     use_phonemes=True,
-    use_espeak_phonemes=False,
     phoneme_language="en-us",
     phoneme_cache_path=os.path.join(output_path, "phoneme_cache"),
+    precompute_num_workers=4,
     print_step=50,
     print_eval=False,
     mixed_precision=False,
@@ -67,23 +68,28 @@ if not config.model_args.use_aligner:
         f"python TTS/bin/compute_attention_masks.py --model_path {model_path} --config_path {config_path} --dataset ljspeech --dataset_metafile metadata.csv --data_path ./recipes/ljspeech/LJSpeech-1.1/  --use_cuda true"
     )
 
-# init audio processor
-ap = AudioProcessor(**config.audio)
+# INITIALIZE THE AUDIO PROCESSOR
+# Audio processor is used for feature extraction and audio I/O.
+# It mainly serves to the dataloader and the training loggers.
+ap = AudioProcessor.init_from_config(config)
 
-# load training samples
+# INITIALIZE THE TOKENIZER
+# Tokenizer is used to convert text to sequences of token IDs.
+# If characters are not defined in the config, default characters are passed to the config
+tokenizer, config = TTSTokenizer.init_from_config(config)
+
+# LOAD DATA SAMPLES
+# Each sample is a list of ```[text, audio_file_path, speaker_name]```
+# You can define your custom sample loader returning the list of samples.
+# Or define your custom formatter and pass it to the `load_tts_samples`.
+# Check `TTS.tts.datasets.load_tts_samples` for more details.
 train_samples, eval_samples = load_tts_samples(dataset_config, eval_split=True)
 
 # init the model
-model = ForwardTTS(config)
+model = ForwardTTS(config, ap, tokenizer, speaker_manager=None)
 
 # init the trainer and 🚀
 trainer = Trainer(
-    TrainingArgs(),
-    config,
-    output_path,
-    model=model,
-    train_samples=train_samples,
-    eval_samples=eval_samples,
-    training_assets={"audio_processor": ap},
+    TrainingArgs(), config, output_path, model=model, train_samples=train_samples, eval_samples=eval_samples
 )
 trainer.fit()
diff --git a/recipes/ljspeech/fast_speech/train_fast_speech.py b/recipes/ljspeech/fast_speech/train_fast_speech.py
index a71da94b..f9f1bc06 100644
--- a/recipes/ljspeech/fast_speech/train_fast_speech.py
+++ b/recipes/ljspeech/fast_speech/train_fast_speech.py
@@ -5,6 +5,7 @@ from TTS.trainer import Trainer, TrainingArgs
 from TTS.tts.configs.fast_speech_config import FastSpeechConfig
 from TTS.tts.datasets import load_tts_samples
 from TTS.tts.models.forward_tts import ForwardTTS
+from TTS.tts.utils.text.tokenizer import TTSTokenizer
 from TTS.utils.audio import AudioProcessor
 from TTS.utils.manage import ModelManager
 
@@ -45,9 +46,9 @@ config = FastSpeechConfig(
     epochs=1000,
     text_cleaner="english_cleaners",
     use_phonemes=True,
-    use_espeak_phonemes=False,
     phoneme_language="en-us",
     phoneme_cache_path=os.path.join(output_path, "phoneme_cache"),
+    precompute_num_workers=8,
     print_step=50,
     print_eval=False,
     mixed_precision=False,
@@ -66,23 +67,28 @@ if not config.model_args.use_aligner:
         f"python TTS/bin/compute_attention_masks.py --model_path {model_path} --config_path {config_path} --dataset ljspeech --dataset_metafile metadata.csv --data_path ./recipes/ljspeech/LJSpeech-1.1/  --use_cuda true"
     )
 
-# init audio processor
-ap = AudioProcessor(**config.audio)
+# INITIALIZE THE AUDIO PROCESSOR
+# Audio processor is used for feature extraction and audio I/O.
+# It mainly serves to the dataloader and the training loggers.
+ap = AudioProcessor.init_from_config(config)
 
-# load training samples
+# INITIALIZE THE TOKENIZER
+# Tokenizer is used to convert text to sequences of token IDs.
+# If characters are not defined in the config, default characters are passed to the config
+tokenizer, config = TTSTokenizer.init_from_config(config)
+
+# LOAD DATA SAMPLES
+# Each sample is a list of ```[text, audio_file_path, speaker_name]```
+# You can define your custom sample loader returning the list of samples.
+# Or define your custom formatter and pass it to the `load_tts_samples`.
+# Check `TTS.tts.datasets.load_tts_samples` for more details.
 train_samples, eval_samples = load_tts_samples(dataset_config, eval_split=True)
 
 # init the model
-model = ForwardTTS(config)
+model = ForwardTTS(config, ap, tokenizer)
 
 # init the trainer and 🚀
 trainer = Trainer(
-    TrainingArgs(),
-    config,
-    output_path,
-    model=model,
-    train_samples=train_samples,
-    eval_samples=eval_samples,
-    training_assets={"audio_processor": ap},
+    TrainingArgs(), config, output_path, model=model, train_samples=train_samples, eval_samples=eval_samples
 )
 trainer.fit()
diff --git a/recipes/ljspeech/glow_tts/train_glowtts.py b/recipes/ljspeech/glow_tts/train_glowtts.py
index 4762a77a..dd450a57 100644
--- a/recipes/ljspeech/glow_tts/train_glowtts.py
+++ b/recipes/ljspeech/glow_tts/train_glowtts.py
@@ -52,7 +52,8 @@ ap = AudioProcessor.init_from_config(config)
 
 # INITIALIZE THE TOKENIZER
 # Tokenizer is used to convert text to sequences of token IDs.
-tokenizer = TTSTokenizer.init_from_config(config)
+# If characters are not defined in the config, default characters are passed to the config
+tokenizer, config = TTSTokenizer.init_from_config(config)
 
 # LOAD DATA SAMPLES
 # Each sample is a list of ```[text, audio_file_path, speaker_name]```
diff --git a/recipes/ljspeech/speedy_speech/train_speedy_speech.py b/recipes/ljspeech/speedy_speech/train_speedy_speech.py
index 6b9683af..468e8a5f 100644
--- a/recipes/ljspeech/speedy_speech/train_speedy_speech.py
+++ b/recipes/ljspeech/speedy_speech/train_speedy_speech.py
@@ -5,6 +5,7 @@ from TTS.trainer import Trainer, TrainingArgs
 from TTS.tts.configs.speedy_speech_config import SpeedySpeechConfig
 from TTS.tts.datasets import load_tts_samples
 from TTS.tts.models.forward_tts import ForwardTTS
+from TTS.tts.utils.text.tokenizer import TTSTokenizer
 from TTS.utils.audio import AudioProcessor
 
 output_path = os.path.dirname(os.path.abspath(__file__))
@@ -38,9 +39,9 @@ config = SpeedySpeechConfig(
     epochs=1000,
     text_cleaner="english_cleaners",
     use_phonemes=True,
-    use_espeak_phonemes=False,
     phoneme_language="en-us",
     phoneme_cache_path=os.path.join(output_path, "phoneme_cache"),
+    precompute_num_workers=4,
     print_step=50,
     print_eval=False,
     mixed_precision=False,
@@ -50,14 +51,22 @@ config = SpeedySpeechConfig(
     datasets=[dataset_config],
 )
 
-# # compute alignments
-# if not config.model_args.use_aligner:
-#     manager = ModelManager()
-#     model_path, config_path, _ = manager.download_model("tts_models/en/ljspeech/tacotron2-DCA")
-#     # TODO: make compute_attention python callable
-#     os.system(
-#         f"python TTS/bin/compute_attention_masks.py --model_path {model_path} --config_path {config_path} --dataset ljspeech --dataset_metafile metadata.csv --data_path ./recipes/ljspeech/LJSpeech-1.1/  --use_cuda true"
-#     )
+# INITIALIZE THE AUDIO PROCESSOR
+# Audio processor is used for feature extraction and audio I/O.
+# It mainly serves to the dataloader and the training loggers.
+ap = AudioProcessor.init_from_config(config)
+
+# INITIALIZE THE TOKENIZER
+# Tokenizer is used to convert text to sequences of token IDs.
+# If characters are not defined in the config, default characters are passed to the config
+tokenizer, config = TTSTokenizer.init_from_config(config)
+
+# LOAD DATA SAMPLES
+# Each sample is a list of ```[text, audio_file_path, speaker_name]```
+# You can define your custom sample loader returning the list of samples.
+# Or define your custom formatter and pass it to the `load_tts_samples`.
+# Check `TTS.tts.datasets.load_tts_samples` for more details.
+train_samples, eval_samples = load_tts_samples(dataset_config, eval_split=True)
 
 # init audio processor
 ap = AudioProcessor(**config.audio.to_dict())
@@ -66,16 +75,14 @@ ap = AudioProcessor(**config.audio.to_dict())
 train_samples, eval_samples = load_tts_samples(dataset_config, eval_split=True)
 
 # init model
-model = ForwardTTS(config)
+model = ForwardTTS(config, ap, tokenizer)
 
-# init the trainer and 🚀
+# INITIALIZE THE TRAINER
+# Trainer provides a generic API to train all the 🐸TTS models with all its perks like mixed-precision training,
+# distributed training, etc.
 trainer = Trainer(
-    TrainingArgs(),
-    config,
-    output_path,
-    model=model,
-    train_samples=train_samples,
-    eval_samples=eval_samples,
-    training_assets={"audio_processor": ap},
+    TrainingArgs(), config, output_path, model=model, train_samples=train_samples, eval_samples=eval_samples
 )
+
+# AND... 3,2,1... 🚀
 trainer.fit()
diff --git a/recipes/ljspeech/tacotron2-DCA/train_tacotron_dca.py b/recipes/ljspeech/tacotron2-DCA/train_tacotron_dca.py
index 0a285c3b..a7f037e6 100644
--- a/recipes/ljspeech/tacotron2-DCA/train_tacotron_dca.py
+++ b/recipes/ljspeech/tacotron2-DCA/train_tacotron_dca.py
@@ -6,6 +6,7 @@ from TTS.tts.configs.shared_configs import BaseDatasetConfig
 from TTS.tts.configs.tacotron2_config import Tacotron2Config
 from TTS.tts.datasets import load_tts_samples
 from TTS.tts.models.tacotron2 import Tacotron2
+from TTS.tts.utils.text.tokenizer import TTSTokenizer
 from TTS.utils.audio import AudioProcessor
 
 # from TTS.tts.datasets.tokenizer import Tokenizer
@@ -60,23 +61,35 @@ config = Tacotron2Config(  # This is the config that is saved for the future use
     datasets=[dataset_config],
 )
 
-# init audio processor
-ap = AudioProcessor(**config.audio.to_dict())
+# INITIALIZE THE AUDIO PROCESSOR
+# Audio processor is used for feature extraction and audio I/O.
+# It mainly serves to the dataloader and the training loggers.
+ap = AudioProcessor.init_from_config(config)
 
-# load training samples
+# INITIALIZE THE TOKENIZER
+# Tokenizer is used to convert text to sequences of token IDs.
+# If characters are not defined in the config, default characters are passed to the config
+tokenizer, config = TTSTokenizer.init_from_config(config)
+
+# LOAD DATA SAMPLES
+# Each sample is a list of ```[text, audio_file_path, speaker_name]```
+# You can define your custom sample loader returning the list of samples.
+# Or define your custom formatter and pass it to the `load_tts_samples`.
+# Check `TTS.tts.datasets.load_tts_samples` for more details.
 train_samples, eval_samples = load_tts_samples(dataset_config, eval_split=True)
 
-# init model
-model = Tacotron2(config)
+# INITIALIZE THE MODEL
+# Models take a config object and a speaker manager as input
+# Config defines the details of the model like the number of layers, the size of the embedding, etc.
+# Speaker manager is used by multi-speaker models.
+model = Tacotron2(config, ap, tokenizer)
 
-# init the trainer and 🚀
+# INITIALIZE THE TRAINER
+# Trainer provides a generic API to train all the 🐸TTS models with all its perks like mixed-precision training,
+# distributed training, etc.
 trainer = Trainer(
-    TrainingArgs(),
-    config,
-    output_path,
-    model=model,
-    train_samples=train_samples,
-    eval_samples=eval_samples,
-    training_assets={"audio_processor": ap},
+    TrainingArgs(), config, output_path, model=model, train_samples=train_samples, eval_samples=eval_samples
 )
+
+# AND... 3,2,1... 🚀
 trainer.fit()
diff --git a/recipes/ljspeech/tacotron2-DDC/train_tacotron_ddc.py b/recipes/ljspeech/tacotron2-DDC/train_tacotron_ddc.py
index b452094a..285c416c 100644
--- a/recipes/ljspeech/tacotron2-DDC/train_tacotron_ddc.py
+++ b/recipes/ljspeech/tacotron2-DDC/train_tacotron_ddc.py
@@ -6,6 +6,7 @@ from TTS.tts.configs.shared_configs import BaseDatasetConfig
 from TTS.tts.configs.tacotron2_config import Tacotron2Config
 from TTS.tts.datasets import load_tts_samples
 from TTS.tts.models.tacotron2 import Tacotron2
+from TTS.tts.utils.text.tokenizer import TTSTokenizer
 from TTS.utils.audio import AudioProcessor
 
 # from TTS.tts.datasets.tokenizer import Tokenizer
@@ -46,6 +47,7 @@ config = Tacotron2Config(  # This is the config that is saved for the future use
     use_phonemes=True,
     phoneme_language="en-us",
     phoneme_cache_path=os.path.join(output_path, "phoneme_cache"),
+    precompute_num_workers=8,
     print_step=25,
     print_eval=True,
     mixed_precision=False,
@@ -56,11 +58,28 @@ config = Tacotron2Config(  # This is the config that is saved for the future use
 # init audio processor
 ap = AudioProcessor(**config.audio.to_dict())
 
-# load training samples
+# INITIALIZE THE AUDIO PROCESSOR
+# Audio processor is used for feature extraction and audio I/O.
+# It mainly serves to the dataloader and the training loggers.
+ap = AudioProcessor.init_from_config(config)
+
+# INITIALIZE THE TOKENIZER
+# Tokenizer is used to convert text to sequences of token IDs.
+# If characters are not defined in the config, default characters are passed to the config
+tokenizer, config = TTSTokenizer.init_from_config(config)
+
+# LOAD DATA SAMPLES
+# Each sample is a list of ```[text, audio_file_path, speaker_name]```
+# You can define your custom sample loader returning the list of samples.
+# Or define your custom formatter and pass it to the `load_tts_samples`.
+# Check `TTS.tts.datasets.load_tts_samples` for more details.
 train_samples, eval_samples = load_tts_samples(dataset_config, eval_split=True)
 
-# init model
-model = Tacotron2(config)
+# INITIALIZE THE MODEL
+# Models take a config object and a speaker manager as input
+# Config defines the details of the model like the number of layers, the size of the embedding, etc.
+# Speaker manager is used by multi-speaker models.
+model = Tacotron2(config, ap, tokenizer, speaker_manager=None)
 
 # init the trainer and 🚀
 trainer = Trainer(
diff --git a/recipes/ljspeech/vits_tts/train_vits.py b/recipes/ljspeech/vits_tts/train_vits.py
index 0588e9d9..79c0db2e 100644
--- a/recipes/ljspeech/vits_tts/train_vits.py
+++ b/recipes/ljspeech/vits_tts/train_vits.py
@@ -33,7 +33,7 @@ audio_config = BaseAudioConfig(
 config = VitsConfig(
     audio=audio_config,
     run_name="vits_ljspeech",
-    batch_size=48,
+    batch_size=16,
     eval_batch_size=16,
     batch_group_size=5,
     num_loader_workers=0,
@@ -48,7 +48,7 @@ config = VitsConfig(
     compute_input_seq_cache=True,
     print_step=25,
     print_eval=True,
-    mixed_precision=True,
+    mixed_precision=False,
     max_seq_len=500000,
     output_path=output_path,
     datasets=[dataset_config],
@@ -61,7 +61,8 @@ ap = AudioProcessor.init_from_config(config)
 
 # INITIALIZE THE TOKENIZER
 # Tokenizer is used to convert text to sequences of token IDs.
-tokenizer = TTSTokenizer.init_from_config(config)
+# config is updated with the default characters if not defined in the config.
+tokenizer, config = TTSTokenizer.init_from_config(config)
 
 # LOAD DATA SAMPLES
 # Each sample is a list of ```[text, audio_file_path, speaker_name]```
diff --git a/recipes/vctk/vits/train_vits.py b/recipes/vctk/vits/train_vits.py
index 7eb741c4..2906557d 100644
--- a/recipes/vctk/vits/train_vits.py
+++ b/recipes/vctk/vits/train_vits.py
@@ -7,6 +7,7 @@ from TTS.tts.configs.vits_config import VitsConfig
 from TTS.tts.datasets import load_tts_samples
 from TTS.tts.models.vits import Vits, VitsArgs
 from TTS.tts.utils.speakers import SpeakerManager
+from TTS.tts.utils.text.tokenizer import TTSTokenizer
 from TTS.utils.audio import AudioProcessor
 
 output_path = os.path.dirname(os.path.abspath(__file__))
@@ -63,10 +64,21 @@ config = VitsConfig(
     datasets=[dataset_config],
 )
 
-# init audio processor
-ap = AudioProcessor(**config.audio.to_dict())
+# INITIALIZE THE AUDIO PROCESSOR
+# Audio processor is used for feature extraction and audio I/O.
+# It mainly serves to the dataloader and the training loggers.
+ap = AudioProcessor.init_from_config(config)
 
-# load training samples
+# INITIALIZE THE TOKENIZER
+# Tokenizer is used to convert text to sequences of token IDs.
+# config is updated with the default characters if not defined in the config.
+tokenizer, config = TTSTokenizer.init_from_config(config)
+
+# LOAD DATA SAMPLES
+# Each sample is a list of ```[text, audio_file_path, speaker_name]```
+# You can define your custom sample loader returning the list of samples.
+# Or define your custom formatter and pass it to the `load_tts_samples`.
+# Check `TTS.tts.datasets.load_tts_samples` for more details.
 train_samples, eval_samples = load_tts_samples(dataset_config, eval_split=True)
 
 # init speaker manager for multi-speaker training
@@ -76,7 +88,7 @@ speaker_manager.set_speaker_ids_from_data(train_samples + eval_samples)
 config.model_args.num_speakers = speaker_manager.num_speakers
 
 # init model
-model = Vits(config, speaker_manager)
+model = Vits(config, ap, tokenizer, speaker_manager)
 
 # init the trainer and 🚀
 trainer = Trainer(
@@ -86,6 +98,5 @@ trainer = Trainer(
     model=model,
     train_samples=train_samples,
     eval_samples=eval_samples,
-    training_assets={"audio_processor": ap},
 )
 trainer.fit()