In December 1978, at the age of 22, Cuccurullo was invited to audition as a guitarist for Zappa's new road band, in which many members were replaced (including Bozzio and O'Hearn). Several shows on the early 1979 "Human Jukebox" European/Asian tour were recorded for Zappa's live albums. After the tour, Cuccurullo returned to the studio with Zappa to work on the "Joe's Garage" albums, for which he provided rhythm guitar and several vocal parts. Terry Bozzio's wife Dale Bozzio also contributed vocal parts to the album. Cuccurullo and Dale Bozzio began writing songs together, and eventually they convinced Terry Bozzio that the three of them should launch their own band.