Premise: John Hovig Dolmayan ( Ջոն Դոլմայան , born July 15 , 1973 ) is a Lebanese-born Armenian -- American songwriter and drummer . He is best known as the drummer of System of a Down . Dolmayan is also the drummer for the band Indicator and former drummer for Scars on Broadway . System of a Down . The band currently consists of Serj Tankian ( lead vocals , keyboards ) , Daron Malakian ( vocals , guitar ) , Shavo Odadjian ( bass , backing vocals ) and John Dolmayan ( drums ) . System of a Down is an American rock band formed by musicians of Armenian origin : vocalist Serj Tankian , guitarist Daron Malakian , bassist Shavo Odadjian , and drummer John Dolmayan in the mid-1990s .
Hypothesis: John Dolmayan is a signer.
Label: NEUTRAL