I have been using Nokia's music store in my Lumia phone.Its pretty basic.If you are looking for a decent library at a low cost it is worthwhile.Some people are

I have been using Nokia's music store in my Lumia phone.Its pretty basic.If you are looking for a decent library at a low cost it is worthwhile.Some people are using it like a ipod instead of a phone.Of course, you would be locked down to MS.