Jaco is a track by the Pat Metheny Group from their 1978 debut album Pat Metheny Group. The piece is a tribute to Jaco Pastorius, the pioneering fretless bass player who helped redefine jazz fusion. The album was released in 1978 on ECM and features Pat Metheny, Lyle Mays, Mark Egan, and Danny Gottlieb. Jaco embodies the group’s jazz fusion sound with guitar driven melodies and intricate interplay on electric guitar, keyboards, and rhythm. The track runs about 5 minutes and 34 seconds and is one of the standout early pieces of the Pat Metheny Group.