[2] In the early 1960s, Al Kasha, an associate of singer, songwriter and record producer Bob Gaudio, introduced Linzer to Randell.
[3] The pair wrote several Top 10 songs for Frankie Valli and The Four Seasons, including "Working My Way Back to You" (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!".
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, once attributed to Johann Sebastian Bach but now to Christian Petzold) and "Attack!".
[3] They wrote two songs recorded by The Monkees, "I'll Be Back Up On My Feet" and "The Day We Fall in Love", and "Penny Arcade" by The Cyrkle.
[3] A copyright lawsuit against Dua Lipa by songwriters L. Russell Brown and Linzer "claimed that Levitating infringed on their 1979 disco song Wiggle and Giggle All Night".