Ever had that tune you just couldn’t get out of your head, but you couldn’t remember the darn title or who the heck performed the track? Well there’s an app for that.

Actually, there are several.

In this feature we’ll look at several services that can help you name that tune. We’re still waiting on the app that can actually banish that annoyingly catchy song from your mind, but until then at least you can be armed with knowledge.

Midomi

Midomi is a musical search engine powered by your voice. If you have a webcam, built-in mic or can hook up even the cheapest of microphones to your computer, all you have to do is click the voice search tool and sing or hum the song that’s stuck in your head.

In our usage of Midomi over time, we’ve found it to be startlingly accurate. Of course, it depends a bit on some esoteric factors such as how faithfully you can reproduce the sound (or conversely, how tone-deaf you are!) and how obscure the track is you’re trying to identify. You’ll also need to give the search engine some core identifiable piece of the song to work from, which means knowing enough of the lyrics or melody to trigger a match.

Still, it usually only takes a few seconds’ worth of recording (Midomi suggests 10) to get search results. You can then listen to a clip from what Midomi identifies as the original performance, as well as clips from other users who have sung in their own search queries from that track. The results set is influenced by other users who have searched for that song and found the right match, so over time the accuracy of the entire database theoretically improves as well.

Midomi also has an iPhone App, Midomi Ultra that provides the same functionality, for song recognition on the go. You can also simply hold it up to a speaker and base a query on the actual song itself. Check out a brief video demo of the app below, which also integrates with Twitterand Facebook for socialized sharing of your found songs.

Shazam

Shazamis similar to Midomi, but works primarily as a mobile app and does not include the ability to sing or hum the tune. However, it’s available for more platforms and features quick and accurate search results from simply holding your phone up to the source of a song.

With applications available for iPhone, BlackBerry, and Android(plus other platforms in the UK only at the moment), Shazam casts a wider net in terms of platform support. They also feature a number of social integrations including a Facebook app and other ways to share songs and “musical moments” with friends.

You can also find out more about the artist once you’ve identified a track, as well as get links to purchase the song immediately or watch any associated YouTube videos.

ScreenTunes

If it’s a tune from a movie soundtrack that’s stuck in your brain, or you just can’t remember the name of That Song from That Movie, ScreenTunes might be able to help you out. Mashing up the IMDB soundtrack data with the LyrcisFly API, ScreenTunes allows you to search by song or movie title, or by a specific lyric.

From the search results page you can listen to a song inline or purchase it from iTunes or Amazon. You can also click on the movie title to see the rest of the tracks from that film. The creator, a high school senior, says artist search is coming next.

Do you have other great ways of naming that tune that don’t involve asking Uncle Howard who can recite the lyrics to every song since 1957? Let us know your favorite method in the comments!