What's the number you can call when...?

Question

What's the number you can call when there's a song on; and you hold your phone up to it and in like 10 seconds it texts back with the name of it and who sung it?

I know it exitsts...

Thanks if anyone can tell me! :)

Answer 1

Shazam, I think.

EDIT: Yup, dial 2580 and hold the phone to the music: http://www.shazam.com/music/portal