Twitter is expanding its horizons with a new app called #music. It’s a simple service, really, with a snazzy user interface that helps you discover new artists, see what’s popular, and preview and share tunes. The app is organized into five sections: Popular (new music trending on Twitter), Emerging (Hidden talent found in the Tweets), Suggested (Artists you might like), #NowPlaying (Tweeted by people you follow), and Me (a section that lists the artists you follow). Essentially the service scans your Twitter activity (people you follow, specific artists you follow and interact with, etc.) to aid in the discovery of new music you might like. The main portal is the Popular section and the UI displays interactive images of artists that you can tap on. You can preview tracks, share them, and download them via iTunes. Additionally, the artist squares give users quick access to a musician’s Twitter page where you can find out what artists that musician is following. In addition to iTunes for track previewing, #music is tied to Spotify and rdio; if you subscribe to those streaming services, you can link your account to enable the app to play full tracks.

Currently Twitter’s #music app is available in Apple’s App Store free of charge; if you have an Android device you’re out of luck for the time being. However, you can test drive the new service in a desktop browser at music.twitter.com if you live in the US, Canada, the UK, Ireland, Australia or New Zealand; the desktop layout mirrors its mobile counterpart. In time, the service will expand to more devices and countries.

So watcha waiting for? Go get your discovery on. #getlucky

[Via Twitter]