Happy 50th birthday today to John Petrucci of Dream Theater who was born on 7/12/67. The founding member is a renowned composer and considered one of the most technically gifted guitarists out there. With his former bandmate Mike Portnoy, he has produced all Dream Theater albums from 1999’s Metropolis Pt. 2: Scenes from a Memory to 2009’s Black Clouds & Silver Linings, and has been the sole producer of the band’s albums released since Portnoy’s departure in 2010. Watch Petrucci take on Prince’s “Purple Rain”…..