This is Branch and Deans world famous song "The Dash". The file you will download contains over 100 versions, each with a customized birth year. For example the song starts
"1919 dash 2019, Was written in granite, above Rest In Peace"
So version one will say, "1919 dash 2019"..., version 2 will say "1920 dash 2019", version 3 will say "1921 dash 2019", etc.
Each version is the complete song but with the different birth year, so no matter what year a person was born, there's a version that will cover their birth year.
Listen to the whole song here
* Please allow ample time for download. File size is approx. 800MgB