bass guitar or double bass (e.g. the Fender Rhodes piano bass in the 1960s or 13-note MIDI keyboard controllers in the 2000s). This instrument peaked in popularity during the late 1970s and early 1980s, being particularly associated with the synth pop genre. Bass pedalboard, a keyboard operated by feet found at the base of the console of most pipe organs, pedal pianos, theatre organs, and electric organs. Washtub bass, a simple folk instrument. Also known as a "gutbucket", it is generally believed to have derived from the African ground bow. A musician playing one of these instruments is often known as a bassist. Other more specific terms such as 'bass guitarist', 'double bassist', 'bass player', etc. may also be used. Further reading References Contrabass instruments Bass (sound)