Mysteries is an album by jazz pianist Keith Jarrett recorded in two sessions in December 1975. Originally released by Impulse! in 1976, it features performances by Jarrett's 'American Quartet' of Dewey Redman, Charlie Haden and Paul Motian, along with Guilherme Franco on percussion. The December 1975 "Mysteries" sessions also produced the album Shades. The album was included in the 1996 four disc Mysteries: The Impulse Years 1975-1976, a box-set which also included Shades and Jarrett's two final albums for Impulse!, Byablue and Bop-Be.