Favourite One Hit Wonders

[Littlesue]

Another one which was big on the Black Country/Brummie club scene, not sure if anywhere else

 

[Rita_Poon]

Sabrina had a no 25 effort after that...just saying.
But you're correct in the assumption of one off music mix efforts.
Seems more prominent over the last few years

Was it this duet?

Spoiler: Warning, especially for Blondie fans, this is a no go!