I Think vh1 hd also Present in India, but it's English music channel.
Looking at HD hindi music channel, till now 9x hasn't launched any Had music channel,
Sony ROX & M Tunes HD also dropped.
Mtv Beats HD not available in D2h & ADTV.
If Channels of this category was successful then, there may 4 Channels.
MTunes HD
Mtv Beats HD
Sony Rox HD
9xm HD
Recently Channel V, Sony Mix & Sangeet Marathi and one other (not remember name) dropped,
So Some unusual changes happening in Music Broadcasting Right & Licensing,
Maybe online streaming sites & apps main reason for this.