The bass drum of a drum kit used with rock or jazz music is modeled as a 3D geometry in a transient finite-element formulation. The geometry was taken from a Gretch drum set called ‘‘Vinnie Colaiuta’’ with no cushion damping within the drum or at the resonance membrane. The 12 cross layers or wood used for the drum body was assumed to result in an isotropical Young’s modulus all over the wood. The drum was modeled with air enclosed, with the beating and resonating membranes being coupled to the air and to the wooden rim of the drum body. Also, as a starting point of the transient calculation, the strain of the wooden body caused by the tension of the membranes was taken into consideration. The transient model started with a beating on the front membrane and the radiation of the system was integrated over the radiating area. The results are compared to recordings of a real bass drum of this Gretch drum set.