This feature would be really helpful!
My feature list for text notes: 1) Song (already implemented, maybe integrated in the browser tab), 2) Track notes, 3) User created/changed presets (more room, additional to the current short text line) and 4) text notes for user created audio files
features: header, timestamp and text;
simple text search, maybe the ability to search explicit for [tracks, presets, all notes, within date and time]
and a simple raw text export (you can print and format the text with windows/mac tools)
Very cool would be the ability to searching text from the start page (search in all songs)