From Inedible Software:
Do you have forgotten gems stranded in your music library? One Hit Wonders helps you find them.
One Hit Wonders ties into your music library and shows any songs with a unique artist and album -- in other words, the one hit wonders of your own personal collection. You took the time to add them to your library, and now you can give them the attention they deserve.
Features: - Familiar, easy-to-use interface - Quickly sort or shuffle songs - Uses the built-in music player, so you can access all the features you're used to
If you like One Hit Wonders, check out its big brother Song Sift!