Super Bowl 2015: Katy Perry and Lenny Kravitz half-time song 'leaked'

With the 2015 Super Bowl right around the corner, red-blooded Americans just can't contain their excitement over Katy Perry's halftime show.

So when the pop star's apparent Super Bowl song emerged online earlier this week, it was always going to send fans into a frenzy.

The "performance", which was leaked by serial prankster Tim Heidecker, even featured an appearance from rock legend Lenny Kravitz. But something wasn't quite right.

One quick listen of the track, which includes the "I like to have so much fun/ I like to run/ I like to watch the football game/ It makes me totally insane," and it's clear that it's a fake.

Any doubt is erased when Kravitz, who actually will join Perry on stage in Phoenix, Arizona, delivers the line "I'm Lenny Kravitz, brought to you by T-Mobile."

And it looks like even Perry was in on the joke. She shared the link with her 64.1 million Twitter followers.

You may recall that back in 2012, Heidecker also leaked a what was supposedly a composition of Madonna's Super Bowl halftime show.

Fans smelled a rat when they heard the rap track which featured started out with: "My name is Madonna and I'm here to say / I like football in a very big way."

Heidecker is one half of the comedy team Tim & Eric.