Smack Up is a 1960 jazz album by saxophonist Art Pepper playing with Jack Sheldon, Pete Jolly, Jimmy Bond and Frank Butler.Leonard Feather's sleeve notes include two quotes by Pepper which throw light on his approach to playing jazz:"Knowing the relationships of chords to one another, how they fit into sequences and how you build on them, all reminds you that there's an important relationship between mathematics and music.""The way a man walks, the way he talks, the timbre of his voice, the cadences of his speech, his little variations in phrasing a thought — all have so much to do with individuality.