by Scissor Sisters.
This song was written with Elton John, who also plays the piano for it.
Songfacts.com claims it is a deliberate rebuke to the Bee Gees "You Should Be Dancing" (2nd video on this post), while Wikipedia compares it to Leo Sayer's "You Make Me Feel Like Dancing" (3rd video on this post), both became hits when released in 1976.
UPDATE - Youtube keeps blocking this videoclip. So I've put a non-video version of it, and if you want to see the cool videoclip, click here.