Catalyst was a funk/jazz quartet from Philadelphia, Pennsylvania, whose material presaged the work of later jazz fusion artists. The group encountered regional success in the 1970s and have become more widely known since the re-release of their material on CD. In the 1990s, the Muse catalog was acquired by Joel Dorn's 32 Jazz label, which released some of Catalyst's work on a 1998 compilation album. Fan interest led to their entire four-album discography being released as a 2-CD set, entitled The Funkiest Band You Never Heard.