80/81 is a double album by jazz guitarist Pat Metheny, featuring tenor saxophonists Dewey Redman and Michael Brecker, acoustic bassist Charlie Haden and drummer Jack DeJohnette, which was released in 1980.
Metheny toured in the U.S. in fall 1980 with a quartet including Redman, Haden and drummer Paul Motian. In the summer of 1981, he toured Europe with the full 80/81 lineup featured on the album. [Wikipedia]