A lyric_text_data record stores a lyric element's text element data.

Lyric text data is part of a lyric syllable. The foreign key to lyric_text_data in lyric_syllable is lyric_text_data_id.

Lyric text data is a Formatted Display (has both a display and text_format record), and so the text value is stored in the text_format table's value column, and has an ordering column, even though it is unused because the lyric_text_data/lyric_syllable relation is one-to-one.