An alleged duet between Justin Bieber, Miley Cyrus and Lil Twist, titled Twerk, has leaked on the web.

"Girl we can take it slow, don't need nobody to know. Let me see you get out on the floor girl, we gonna party all night until it's over," Bieber sings.

A female voice, presumed to be Cyrus', sings the chorus: "I came up in this party, time to twerk, I came up in this party and I'm turnt." (Listen to the song below.)

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Back in May, Cyrus was spotted leaving Bieber's recording studio, which led to speculations that they were making music together.

"I know pictures are flying around," she told E! Online. "You guys will have to wait and see. I'm the biggest at top secrets."

Following the speculations, rapper Lil Twist released the cover art of a single titled Twerk, on his Twitter in July. The cover shows a still image of Cyrus taken from her famous twerking video. It also revealed that Justin Bieber was to be featured on the song, as well.

"Tried warning you," Lil Twist captioned the photo.

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"I'm gone listen to #TWERK one last time before I lay me down to sleep lol...Gotta make sure it's cooked and ready to be served to the people," he later wrote.

In a June interview with On Air With Ryan Seacrest, Cyrus said she's proud of her twerking skills, primarily because of all the positive feedback.

"I could sing at the Grammys and I will always be bashed and I will always have haters, I haven't one bad comment about my twerk video," she said. "This is the first thing where I'm like 'alright, I can't sing, I can't act, I'm dumb, I'm a hillbilly but I can twerk so whatever.'"

Tags: Miley Cyrus Justin Bieber