https://flat.io/
Online collaborative music notation software - Flat
Create, compose, collaborate, play, and print your sheet music using the world's simplest and most intuitive web-based music writing and composition software.
music notation softwareonline
https://inbflat.net/
in Bb 2.0 - a collaborative music/spoken word project
collaborative musicbbspoken
https://music.usc.edu/departments/keyboard-collaborative-arts/
Keyboard Collaborative Arts | USC Thornton School of Music
Nov 13, 2025 - Explore a degree in Keyboard Collaborative Arts at USC Thornton School of Music. Apply and start your musical career today!
usc thornton schoolkeyboard