We bet you've already searched online for "what song was 1 on my birthday". But how about when you were 14? 18? Or what was the #1 song on my 23rd birthday? Y'know, when music actually meant something to you?
Why not check out number one on 14th birthday (the song that defines your life), number 1 on your 12th birthday, or the #1 song on your 24th birthday? Share, compare, and create a custom Spotify playlist of your soundtrack.
Select your country, enter your date of birth and away you go!
Here are a selection of previous number one hits on 23rd September - which do you remember?