Mike Portnoy

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

One wanted The Similitude Of A Dream to be a double album, and one didn’t – and neither of them understood the other’s position when they stormed out of their studio in 2016

Drummer was around half-way through his separation from the band he’d co-founded when his 50th birthday came up, and he decided to assemble the songs inspired by his fight against alcoholism

Leader Damon Fox’s ambition was to turn his band into “the Radiohead of metal.” But their fourth album, released in 2014, has been their last word to date

Despite concerns their drummer wouldn’t find time to take part, fifth album has been compared to their 2016 virtuosic victory, and they’re planning to tour it with the complete studio line-up

Mike Portnoy and Derek Sherinian had big ambitions when they teamed up with Guns N’ Roses, Mr Big and Journey alumni

It was the double-album that split critics, fans and the line-up who recorded it. We asked a range of prog stars for their thoughts on the 1973 release