Denny Randell (also a hit for The Spinners in 1979, and in Ireland for Boyzone in 1994), "Opus 17 (Don't You Worry 'Bout Me)", and, with Bob Crewe, "Let's Hang On!". Randell and Crewe later co-wrote Valli's solo hit "Swearin' To God". In 1965, Randell and Linzer wrote and produced most of the songs for the R&B girl group, The Toys, including their singles "A Lover's Concerto" (adapted from "Minuet in G major", a classical music piece), and "Attack!" Another Toys recording written by the duo, "Can't Get Enough Of You Baby", was later covered by the garage band ? and the
Switched-On Bach correct levels. After several notes were played, it was checked again to make sure it had not "drifted". According to Carlos, "Switched-On Bach" took approximately five months and a total of one thousand hours to produce. Bach provided only two chords for the second movement of the Brandenburg Concerto No. 3 in G Major, intending that the musician would improvise on these chords. Carlos carefully constructed this piece to showcase the capabilities of the Moog. "Switched-On Bach" was released with two different covers. The most common features a man dressed as Bach standing before a Moog synthesizer. Early pressings feature