La Monte Young - Magic opening chord: E♭, E, F, A, B♭, C, D, E♭, E, F, G, A, B♭ = 2:3:7:9:21:63:567:189:567. The opening chord (left), E, F, A, B♭, D, E, G, and A, and the magic chord (right), E♭, B♭, C, E♭, F, B♭.
I accidentally made this in audacity adjusting the tempo of a chime sound effect, but maybe it has uses elsewhere. Sounds to me like a game show "wrong answer" sound effect or a magic spell that fails to cast.