Known at the time as a pop producer, he brought a more heavily synthesised sound to Rush. After reluctantly declining to work with Rush for their albums Presto and Roll the Bones, he later returned to collaborate with the band for Counterparts and Test for Echo.
A well-known music producer at the time, specializing in pop, joined Rush and brought a more heavily electronic sound to the group. Initially, he declined to work with them on Presto and Roll the Bones, but later changed his mind and collaborated with the band on Counterparts and Test for Echo.