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
Sandy Linzer (adapted from "Minuet in G major", once attributed to Johann Sebastian Bach but now to Christian Petzold) 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 Mysterians and, in 1998, was a #14 hit when covered by Smash Mouth. They also had a hit with Jay and the Techniques' "Keep the Ball Rollin'". Linzer and Randell established their own record label, Oliver, in 1966. They wrote two songs recorded by The Monkees, "I'll Be Back Up On My Feet" and "The Day We Fall