B-side of Sunshine Superman.
Sonny & Cher [elements (bass and mood) in The Beat Goes On]
George Kooymans [idem]
Buddy Rich [idem, with daughter Cathy and with the same beat as Lee Morgan's The Sidewinder from '64]
All Seeing I [idem; sample Buddy Rich version]
Britney Spears [idem; again with this same beat]
The Trip is a separate song, yet there's these striking similarities with The Beat Goes On. Kim Fowley made another Trip in '65, covered by Godfrey on Pebbles Vol 3. See also: The Man With The Golden Arm.