Don’t know the name of that wonderful Irish tune you can’t stop humming, or recorded a little bit of in the Session Bar?
This is a FANTASTIC app (application) that you can download on your iPhone or iPad or Android. You use it to record a few seconds of the tune being played, and it goes off and comes back and tells you what it thinks the tune is – with links to the sheet music and/or sound – so you can check if it got it right.