There is an extension of drumspeak known as vocal percussion, practiced by college a cappella groups as well as some more famous groups like Rockapella. A vocal percussionist, using only his or her mouth and throat, strives to perfectly emulate the sounds of a drum kit. This has roots in rap as well as rock and roll, where a vocal percussionist is known as a "human beatbox". The difference is really only in the type of music (and specifically, the type of percussion in the original song)--as electronica seep into mainstream pop, more and more bands have no drummer, only a synthesized drum loop, and the "beatbox" moniker becomes more appropriate. A good vocal percussionist can also serve as a beatbox; this is similar to saying a combat fighter pilot can also serve as an airline pilot.