An absolute must-have app. This app takes a short recording of any music you point your phone at and checks it against what can only be a huge database of music to give you the track, artist and you tube & amazon links. I've used it in a noisy reggae club, with the radio at home, on handsfree in the car and out and about and it works. Ever wanted to use the soundtrack to a video in your teaching but without the dialogue or noise that comes with it? Try this, it might help.