Sons of Apollo is an American progressive rock supergroup formed in 2017 and composed of drummer Mike Portnoy (ex Dream Theatre), bassist Billy Sheehan (ex Mister Big), keyboardist Derek Sherinian (ex Dream Theatre), vocalist Jeff Scott Soto (ex Journey) and guitarist Ron "Bumblefoot" Thal (ex Guns and Roses). Sherinian and Portnoy played together in progressive metal band Dream Theater, from which Sherinian was asked to leave in 1999, while Portnoy later left in 2010.The name of the band was proposed by Sherinian after he scrolled through a list of suggestions by Portnoy and saw the word "Apollo" among them. It was picked due to Apollo being the god of music. But because the band suspected there could be another band called Apollo, they thought of possible variations and that's how their name was chosen. Their debut album, Psychotic Symphony, was produced by Portnoy and Sherinian (as "The Del Fuvio Brothers") and was released on October 20, 2017 via Inside Out Music/Sony Music. On August 30, 2019, the band released their first live album Live with the Plovdiv Psychotic Symphony, filmed at the Plovdiv Roman theatre in Plovdiv, Bulgaria. Their second album MMXX was released on January 17, 2020.