Throughout the early- to mid-1960s, Fagerquist's solos could be heard on the recordings of Pete Rugolo, Frank Comstock, Nelson Riddle, Billy May, Paul Weston, Si Zentner, Dean Martin and many others.
He also landed a job with MGM from 1949 to the mid-50s, and was involved in the music for films such as Singin' in the Rain and A Star Is Born.