This is one of those “I wish I came up with this” thing. Song Tapper has potential to reduce mankind’s cumulative frustration by a few notch.
We all have those moments where a melody stuck in your head but you can’t quite place what song it was. And humming it to your friends do nothing but drawing nasty sneer. (especially when he/she now becomes equally frustrated at not identifying it)
And that’s the itch Song Tapper is trying to scratch.
I haven’t time to test it thoroughly, but it correctly guessed Maroon5’s She Will Be Loved, that I tapped in.