Rowe Customusic is a background music system^[1] from the 1960s and 1970s. Up to six Fidelipac type C endless-loop magnetic tape cartridges can be loaded in the player, allowing up to 60 hours of playback.^[2] The case is 13+5⁄8 in (350 mm) wide, 11+1⁄8 in (280 mm) high, and 13+3⁄4 in (350 mm) deep.^[3] Like the 3M Cantata 700, the player moves the tape head between cartridges and, as in other Fidelipac players, between the four tracks on a cartridge. The current cartridge number is indicated on a seven-segment display. Automatic track advancement was triggered by a conductive tape strip on the splice of the tape loop, or manually by pressing a button. Another switch located next to the power switch disables cartridge changeover, replaying only the current cartridge.^[4]