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MC can be used:
In the 1970s and 1980s, the term MC (short for Master of Ceremonies, and sometimes misrendered emcee) was generally associated, in hip-hop music, with what is now called rapping. MC has also sometimes been reported to stand for Microphone Controller, but this appears to be a backronym. This uncertainty over the letters' expansion may however be evidence to the ubiquitousness of the acronym: the full Master of Ceremonies is very rarely (if ever) used in the rap scene.
The confusion prompted the hip-hop group A Tribe Called Quest to include this statement on their Midnight Marauders album (1993):
(Note the use of MC as a verb.)