Sons of Apollo is an American progressive metal supergroup formed in 2017 and composed of Mike Portnoy, Billy Sheehan, Derek Sherinian, Jeff Scott Soto and Ron "Bumblefoot" Thal. Portnoy, Sheehan and Sherinian had already worked together at a short-lived, live instrumental project with Tony MacAlpine. Sherinian was asking Portnoy to be a drummer in a band full-time. Portnoy agreed when he had time for it.