One point to note is that they appear to be using (pseudo-)phoneme sequences as inputs instead of characters/text, so you need a frontend that does grapheme to

One point to note is that they appear to be using (pseudo-)phoneme sequences as inputs instead of characters/text, so you need a frontend that does grapheme to phoneme (G2P) conversion. I found that interesting as many previous models (Tacotron 1/2, FastSpeech 1/2, FastPitch, ...) are more often than not trained on text directly (well, tokens from some tokenizer). This may be more relevant for English, though.