Ask someone over the age of 40 who Sparks are, and you can bet they'll name either 'The Number One Song In Heaven' or have never, ever heard of them.

That being said, there's better odds that you've heard of bands influenced by Sparks. Nirvana, Depeche Mode, New Order, and many more.

Sparks have enjoyed a career that's seen them overlooked and underrated, hugely successful and criminally ignored, and all of it done with a real sense of wit and humour about it all. The band initially broke through in the '70s with songs like 'This Town Isn't Big Enough For The Both Of Us' and 'Never Turn Your Back On Mother Earth' before they utterly abandoned the glam rock scene for something closer to synthpop in the early '80s.

The documentary, directed by Edgar Wright of 'Shaun of the Dead' and 'Hot Fuzz' fame, sees a mixture of archive footage of their heyday mixed with celebrity fan interviews, including Jonathan Ross, 'Weird' Al Yankovic, Patton Oswalt, Flea from the Red Hot Chili Peppers, Jason Schwartzman, and many more.

'The Sparks Brothers' had its debut at the Sundance Film Festival where it's currently sitting with a perfect score on Rotten Tomatoes currently. As of now, there's no word yet on where / when this will end up on screens.

Here's the trailer.