The strongest, cleanest, crispest sound I have ever heard on the Lumia 920. I installed this app and I simply could not put it down. Now I can't speak to how this impact my battery or how it might live with my other apps and such. But, for a music app, this one wins solely for richness of its sound. I'm into Smooth Jazz and Christian Contemporary and they have a line up that would make Pandora give Rhapsody a high five and a chest bump. Its in beta right now but the developers got that pride of work thing going on. IE, their name is on it and it will be a highly polished product and not some lazy port. If you listen to a music, Rhapsody gets a strong recommend from me.