John Peter Petrucci is an American guitarist and a founding member of the progressive metal band Dream Theater. He produced all of Dream Theater's albums from Metropolis Pt. 2: Scenes from a Memory (1999), often co-producing alongside drummer Mike Portnoy before Portnoy's departure between 2010 and 2023, and has been the sole producer since A Dramatic Turn of Events (2011). Petrucci has also released two solo albums: Suspended Animation (2005) and Terminal Velocity (2020).