Gong bass drum
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A gong bass drum (or simply 'gong drum') is a type drum which utilizes a single oversized drumhead (who's diameter is normally 2 inches above that of the drum shell) in order to create a loud, resonant sound when struck. Gong bass drums were first produced by Tama in the late '70s, and have since been used my artists such as Neil Peart of Rush and Mike Portnoy of Dream Theater. Gong bass drums are usually relatively large, and are most frequently found in 20" and 22" diameters. They are often mounted on legs (much like that of a floor tom), 'rollaway' stands or ordinary tom stands/arms (though usually a pair is used for stability).