The Singers Unlimited were an American vocal group formed in Chicago in 1967 by
baritone and arranger Gene Puerling, alongside Len Dresslar, Don Shelton, and
Bonnie Herman. Puerling, a self-taught musician with prior experience in The
Hi-Lo's and the Chicago commercial jingle industry, created complex vocal
arrangements that defined the quartet's sound. Introduced to MPS Records
producer Hans Georg Brunner-Schwer by Oscar Peterson following their demo of The
Beatles' song "The Fool on the Hill", the group recorded 15 albums for the label
between 1971 and 1980. Their recordings in...