Filled with both up-and-coming and established acts, Bandcamp is one of the most exciting music marketplaces there is. The app was initially built around streaming songs you'd already purchased on Bandcamp, but now it's a one-stop shop for digital and physical band merch. If you want to keep your finger on the pulse of music, this is an essential app.
Remember the bad old days of ordering food? You needed takeout menus, knowledge of the terrain ("will they even deliver out here?"), cash, and faith that the person jotting down your order got it right. Seamless takes care of all that, even letting you pay via credit card from your Android. The only drawback? It's not available in every city (or even every state), though it has expanded its range dramatically since it was first included on this list. Droid App