Bryan Kei "Brain" Mantia (born February 4, 1963) is an American contemporary rock drummer and composer. He has played with bands such as Primus, Guns N' Roses, Praxis, and Godflesh, and with other performers such as Tom Waits, Serj Tankian, Bill Laswell, Bootsy Collins, and Buckethead. He has also done session work for numerous artists and bands.
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