Many players modified the bodies of their Musicmaster basses to accommodate Precision-style double pickups or enhanced electronics.
The Musicmaster Bass was introduced in 1971, and originally came in either black, red or white finish.
[1] Later, this was expanded to include many of the finishes present on other Fender guitars.
Earlier models are distinguishable by their small headstock logo, lack of a serial number on the headstock, and small, triangular tuning keys; later models feature a much larger headstock logo, with a serial number silkscreened next to the "Fender" logo, and Mustang-style tuning keys.
However, it was discontinued after only a year of production, and replaced with the Squier Bronco Bass, but retaining the six-pole pickup.