You're an invisible fly on the wall, in the rehearsal space of a not-famous-not-failures band. A scene unfolds, tensions flare and years of career frustration spark, and explode:
"Let's quit. It's over."

In the silence someone starts to play their instrument. Everyone joins in, ands the band explores a new song -you- play the role of the muse, gently and invisibly guiding the song through -your- creative choices. During the chorus and the walls disappear and you're on stage in front of a screaming crowd.

The dream is interrupted by someone's kid brother who shows them an AI music creation app. They shoo him out. Shared glances.
"So uh... practice tomorrow then?"
"Sounds good."