You haven't heard of it, therefore it must only be in America? Sound logic.

Shazam has been around for years upon years? Before it was an app you could ring it and it would text you back an answer. A friend used to use it at quizzes years ago when it got to the music round.

I live in the UK

It actually started in the UK.

"Shazam this" graphics feature regularly on telly ads in Ireland and the UK the past while.