Pharoah Sanders was an American jazz saxophonist. Known for his overblowing, harmonic, and multiphonic techniques on the saxophone, as well as his use of "sheets of sound", Sanders played a prominent role in the development of free jazz and spiritual jazz through his work as a member of John Coltrane's groups in the mid-1960s, and later through his solo work. He released more than thirty albums as a leader and collaborated extensively with vocalist Leon Thomas and pianist Alice Coltrane, among many others. Fellow saxophonist Ornette Coleman once described him as "probably the best tenor player in the world".