Well, if you need to introduce a music catalogue or an artist roster, Music Collection is perfect for that. Very usefull and easy to manage. You'll find a complete Joomla component to show and play all your music. Also link to several online shops, like iTunes..
Germi is a great developer and he is always ready to help you. Also he listen your proposals and try to add them for next updates.
Finally I had to tell I like both interfaces, backend and frontend: clean and organized.