Due to launch in the UK before the end of the year, MTV's new high definition channel has now gone live on Sky+ HD.
MTVNHD, an advertising-free channel, now sits on channel 384 in the Sky electronic programme guide, and will be available to Sky+ HD customers.
"The launch of MTVNHD in the UK and Ireland underlines our commitment to provide the audience with high quality programming", said David Lynn, executive vice president of MTV Networks UK and Ireland.
"From launch MTVNHD will provide an unrivalled destination where people can watch and listen to the greatest live music performances for which we are famous".
MTVNHD will show Nickelodeon programming on Saturday and Sunday mornings with a mix of high definition content from MTV Network's international library the remainder of the time.