We start the process by identifying a song and exporting the audio and midi files from Finale and any relevant video performances excerpts from the show. There's some follow-up discussions to give the scene/songs context, but at some point Dave orchestrates the work. When it's complete we add a rehearsal track to the Soundtrap collaboration platform so the various actors can add their vocal parts remotely. Once they've added the parts we export the audio files from Soundtrap to create the master tracks.