John Petrucci

Terminal Velocity saw the pair reuniting a decade after their traumatic split. But Petrucci said he had a selfish reason for Mike Mangini staying in DT – three years before Portnoy’s return

Singer and guitarist shared their frustrations over being called out for their vocals, drum sound and production values as their 15th album arrived

The prog metal giants’ sleek, super-powerful 14th album was a conscious move away from its complex, opinion-splitting predecessor

1999 modern prog masterpiece – their first record with Jordan Rudess – came after the dismissal of Derek Sherinian, the demise of internal “fake democracy” and fights with their label and the media

With friends (and bandmates) reunited for Dream Theater’s 40th anniversary, it’ll be a special night for fans at Wembley Arena later this month

Three years before the reunion actually took place, the pair got together in the studio for the first time in a decade – and the guitarist got their first song wrong

Future prog metal master discovered his Canadian counterpart at just the right time in his life – and he soon had friends including John Myung joining in