1) A far more sophisticated, fun, and powerful instrument evolving from the upright jazz bass shaped
like a guitar, oftenly cosisting
4, 5, 6, 7, 8, or 12 strings. Used in most modern music and hardly given any recognition, the bass produces low-end sounds and notes
to provide rhythm
along with percussion instruments or backup to another instrument, such as an electric guitar.
the idiot ghetto kids
at your school refer to as a guitar, think electric varieties
can produce sound when not plugged in, see as an "evil" instrument used in heavy metal music worshipping Satan, and view only as a tool to get you laid, which is just an added bonus.
Some famous bass players include Flea, Jaco Pastorius, Les Claypool, Geddy Lee, and Ginger Baker.