The Tomboys - Saturday Night

Taken from the 2017 mini-album "To The Dream". I read it's a cover song, but sadly, I couldn't recognize who the original performers are (please help).
I do not own the rights to this song. More infos on the Tomboys : thetomboys.tumblr.com/profile

[@deathstar7766]

This was the first song I ever liked. 4years old. Tomboys rule!

[@augustandjune]

This is a cover of The 50kaitenz version. The original song is from the Bay City Rollers.

[@FrediFuri]

augustandjune , Thank you.

[@aolaunay]

Check out Bay City Rollers for the original song ;)

[@FrediFuri]

Alexis L. , Thank you very much.