MuchMusic Brasil was a Brazilian cable television network and a Brazilian version of the Canadian music network MuchMusic. Launched in 2000, it had a hard time competing with MTV Brasil and in December 2001 the network ceased production, and went off the air.
MuchMusic is still available in several other South American countries, but as a Spanish focused format of MuchMusic Latin America. There is no Portuguese programming on MuchMusic Latin America.
References
MuchMusic Brasil Wikipedia(Text) CC BY-SA