In the Mood app for iPhone and iPad

In the Mood allows you to post the name of song playing by iPhone/iPod touch to Twitter or Blip.fm.
You can also view songs been played near your location.

• Tap the button on the top to input comment that will be posted with the song name to Twitter or Blip.fm.
• While inputting comment, you can add artist name or genre as hashtag. You can also enable/disable to post location or to add map link.
• Tap "Nearby Songs" button on the bottom to display songs been played nearby your location. You can also buy songs in iTunes Store.
• Tap the button on top left of the Nearby Songs screen to switch between list view and map view.
• Tap artwork to control song playback: play, pause and skip forward/back. Also you can pick a song from your library.