Prog rockers Ninth Choir, founded by Dr. Jeffrey Welsh, released a self-titled album in 2013. At the time, drummer Ray Daniels (Patsi's Valdeze, Trailer Park Queen) was a cardiopulmonary doctor at Sharp Coronado Hospital, while guitarist Jeff Welsh ran Mueller College in Fashion Valley. The band has also included Israel-born Meytal Cohen, as well as Chalaya Love, David Chesire, and Tony Garrett.

Welsh is the president of Mueller College, where he launched his classes offering Associate of Occupational Science in Recording Arts degrees. The classes, which began in June 2014, are staged in conjunction with Peter Dyson, who owns Studio West. The college was mainly known for programs in alcohol and drug counseling, personal fitness, holistic health, and massage therapy. They have split locations. One is in Mission Valley, the other on Park Boulevard in City Heights. The Park Boulevard location includes a small music venue called Across the Street.