There are websites to search for music videos, websites to search for lyrics and even websites to search for MP3s. However, there are very few websites that allow you to search for all of these.
Museeca is a search engine solely dedicated to music. You can use Museeca to find MP3,music videos, Ringtones, Lyrics and even guitar tabs. The underlying search engine is Google so the results are pretty fast and accurate. For example, searching for an Mp3 of Fireflies would display a number of MP3 sites where you can listen to and download the song.
You can search for a song by artist, song or album name. While searching for a ringtone, you can narrow your search down to MP3 Ringtones, iPhone Ringtones or Polyphonic Ringtones.
Want to see which chords were used in a particular song? Another unique option that Museeca offers is to search for Guitar tabs. It searches popular guitar sites including Ultimate-Guitar and GuitarTab.
Museeca is an excellent resource to search for music and music related information. When you enter a query in Museeca, it searches Google for you but filters out all the noise and only gives you the results containing actual media.