For
It makes listeners focus on themselves and surroundings.
Against
Music requires sound and rhythm, not emptiness.
Anonymous excerpts, translated where noted.
“Ambient sound, an audience shuffling, or a piano cover opening can all be music.”
“Every sound can be music if you decide it is; once there's intention, there's music.”
“It's a cool artistic statement. But no, it's not music.”
“A song has rhythm and pitch prescribed by the composer. 4'33 is not that kind of piece.”