In the summer of 1966, Rhodes joined the rock band the Music Machine, for whom he primarily played the organ and provided backing vocals.
After the release of the band's first LP, (Turn On) The Music Machine, and a promotional tour, four of the five members, including Rhodes, quit the group, leaving only singer/songwriter Sean Bonniwell.
Rhodes continued to work with Curt Boettcher, forming the band the Millennium along with two other former Music Machine members.
After the short-lived Millennium dissolved, Rhodes kept busy as a session musician, playing for the likes of the Association, Taj Mahal, Chad and Jeremy, Tommy Roe, and Van Dyke Parks.
Eventually, he settled in Victoria, B.C., became a professional at piano tuning and restoration, as well as playing 1920s style jazz with an orchestra called The Belevedere Broadcasters.