Mike Portnoy
In August 2017, he and Mike Portnoy joined forces to form, a progressive metal supergroup named Sons of Apollo and also featuring Billy Sheehan, vocalist Jeff Scott Soto and guitarist Ron "Bumblefoot" Thal. Sons of Apollo released their debut album "Psychotic Symphony" on October 21, 2017, followed by a world tour of 83 shows in 23 countries. Sons of Apollo released their second album, "MMXX", in January 2020 co-produced once again by Sherinian and Mike Portnoy