A different kind of tune for me

I was at a gig earlier this year and a patron came up to request an Adele song. Now its not that I don't like Adele, I think she's a great artist, but there was nothing in my memory banks except part of the chorus to this tune.

I sang the patron the chorus and she walked away happy. But it got me thinking, I should learn the rest of it so I did! Enjoy!