John Peter Petrucci (born July 12, 1967) is an American guitarist, best known as a founding member of the progressive metal band Dream Theater. He produced or co-produced (often with former member Mike Portnoy before he departed the band in 2010) all of Dream Theater's albums from Metropolis Pt. 2: Scenes from a Memory (1999) to A View from the Top of the World (2021), and has been the sole producer of the band's albums released since A Dramatic Turn of Events (2011). Petrucci has also released two solo albums: Suspended Animation (2005) and Terminal Velocity (2020).