It has to suit both our general tastes and our mood at the moment. A good streaming music app needs to reflect this. It needs to have music available that we like, when we like, and the better it does that job, the better it is. You can like and favorite songs which will show up under your favorites section off of the main menu. If you are a premium subscriber, you'll be able to listen to songs on demand. Pandora One is Pandora's premium subscription model. It gives you access to the desktop application for Mac or Windows. The desktop app really isn't anything to get excited about and s quite dull. If you don't know what you're looking for or find things in "what's new" or "what's hot there's pretty much no other way to find music from the iPhone app. This doesn't make for a great experience. So if you detest Rihanna in all forms, just block her from ever showing up for you in Slacker again. Slacker also gives you the ability to check out what artists and tracks are featured on a station. You can view popular playlists, star tracks, see what's popular in your area, and monitor what your friends are listening to. My favorite feature of Spotify's desktop app is the ability to wirelessly sync your starred tracks and playlists whenever your iPhone is on the same Wi-Fi network as your desktop computer.
That's important because not everyone wants to buy their music. Some iPhone users want more variety and a better way to discover new music, or simply re-discover old favorites. That's because music is personal.