Michael Stephen Portnoy (born April 20, 1967) is an American drummer and songwriter primarily known as the former drummer, backing vocalist, and a co-founder of the progressive metal/rock band Dream Theater. In September 2010, Portnoy announced his departure from Dream Theater after 25 years, with Mike Mangini taking his place as drummer of the band. Since his departure, Portnoy has formed variety of new bands and projects, including Adrenaline Mob, Flying Colors, The Winery Dogs and Sons of Apollo.
Also known as
Songwriter, Vocalist
