We've all been there: A song starts playing in your car, and you can't for the life of you figure out who sings it. SoundHound makes that problem a thing of the past: Just tap the app's lock screen widget and -- within seconds -- it'll identify the tune and tell you the details.
While Google has its own basic Sound Search widget built into Android 4.2, SoundHound packs some additional features. The program can recognize your own singing or humming as well as actual recorded music, for example; it also offers a live streaming lyric display to go along with any playing song.
SoundHound costs $5.99.