[2] Regulars on the show Shindig!, the duo had multiple hit songs before St. John and Sperling disbanded in 1969.

[1][7] The rock and roll song "The Mountain's High" became a smash hit in San Francisco.

[7] Sperling left college to perform with St. John on rock and roll tours in America, Europe, and Japan.

They eventually sang in 49 of the 50 states, with acts like Roy Orbison, the Righteous Brothers, Ike and Tina Turner, Dionne Warwick, the Shirelles, The Dick Clark Caravan of Stars, Murray the K’s Brooklyn Paramount Theatre review, Paul Revere and the Raiders, the Kingsmen, Patti La Belle, the Crystals, the Drifters, Ben E. King, Jan and Dean, the Miracles, the Dovells, Johnny Tillotson, Jackie Wilson, and Sonny and Cher.

The duo recorded their voices on three Rolling Stones tracks while visiting London in 1964, including "Blue Turns to Grey", and "Some Things Just Stick in Your Mind", penned by Mick Jagger and Keith Richards.

[2] The songs were officially sanctioned, largely at the behest of Rolling Stones manager Andrew Loog Oldham, and released on Warner Bros.

They also performed the song "Bupkiss" (which was also the title of the episode) on The Dick Van Dyke Show.

After their last hit "Thou Shalt Not Steal",[5] they remained regulars on Jack Good's television show Shindig!.

Dick St. John continued as a songwriter, co-writing "Yellow Balloon" for the group of the same name.

He sang the John Lennon lead vocals on Dan Castellaneta’s Beatles tribute, Two Lips: The Lost Album, in 1998.