Sound is the debut album by free jazz saxophonist Roscoe Mitchell, recorded in 1966 and released on the Delmark label.

"[2] Wadada Leo Smith commented: "It's no accident that Roscoe called that important piece of his Sound.

"[5] The Allmusic review by Steve Huey awarded the album 5 stars, stating, "Structurally, Sound heralded a whole new approach to free improvisation; where most previous free jazz prized an unrelenting fever pitch of emotion, Sound was full of wide-open spaces between instruments, an agreeably rambling pace in between the high-energy climaxes, and a more abstract quality to its solos.

Steady rhythmic pulses were mostly discarded in favor of collective, spontaneous dialogues and novel textures (especially with the less orthodox instruments, which had tremendous potential for flat-out weird noises).

[8] The album's influence on other improvisers was considerable: "Sound's concepts of texture, space, and interaction would shortly be expanded upon in classic recordings by Anthony Braxton, Muhal Richard Abrams, the Art Ensemble of Chicago, and others; the repercussions from its expansion of free jazz's tonal and emotional palettes are still being felt".