Pandora

Pandora.com is one of the web's most popular sites because it's free streaming internet radio works wonders and allows you to search for music similar to a particular artist or song. Now, Pandora has an app in the AppStore that works as a mobile version of their awesome website. You can fine-tune your stations so that they only play music that you want to hear (what a concept!). It also syncs with your online Pandora account so that you don't have to worry having two different Pandora accounts with two different stations. Really awesome app that runs really smoothly. Go get it! It's free in the AppStore.