I think that channel is just an engineering test channel for Music Choice, which provides the MC audio services.
There are plenty of other "radio" channels on Galaxy-19, but MC is encrypted. I still have not figured out who "owns" that particular transponder, and who you would call for a subscription
I like Polskie Radio 3, which has some good rock music at night. There are also some others that carry ethnic music. WRN-NA (World Radio Network: North America service) often has some interesting features programming with music.
Check out Lyngsat.com, and click on the individual channels' web links, and you should find schedules for many of them. That might give you an idea of times and programs that carry specific programming, like music.