EFX was a musical album released of David Cassidy's version of the Las Vegas show, EFX. The album was released in 1997 and only made available on compact disc through the MGM Grand. Cassidy was the headline performer for EFX for two years.[1][2]
During his tenure as a headliner of EFX, Cassidy wrote and recorded the song, Intergalactic Circus of Wonder.