Katy Perry has tried her hand at the full gamut of pop music in forthcoming album Prism, but new track 'Dark Horse' might prove to be its runaway hit.

Getting Juicy J on board might have been the stroke of genius her LP needed, because let us tell you, it's ruddy fantastic.

As you'd expect from the title, it's a dark, brooking piece of moody grooviness, played out with trap aesthetics.

Written by legendary hitmakers Dr. Luke an max Martin who've been working with Perry since day dot, she described it on MTV as, "...witchy and dark, as if I was a witch warning this man not to fall in love with me, and if you do know I’m going to be your last."

What does Juicy J think of Katy? He told MTV: "...She's very professional, everything went smooth and she's a great person."

Listen to the track below and make us feel better about having it on repeat.

Prism is due out October 22nd via Capitol Records (pre-orders are ongoing) and you get 'Dark Horse' to download with every pre-order.

See Also: Join The 405's Free Mixtape Club