Miley Cyrus turns her backyard into a rock show in a surprise collaboration with guitar legend Joan Jett, performing the latter's song 'Different'. It's all for a good cause too, with the duet launching her new charity the Happy Hippie Foundation.

Miley Cyrus at 2014 MTV Video Music AwardsMiley Cyrus shows off her rock side

The 22-year-old pop starlet may divide opinion, but there's no doubt this young lady has pipes. Not only can she belt out a hit pop number ('Wrecking Ball'), rap (Mike WiLL Made-It's '23'), croon country-style (her cover of Dolly Parton's 'Jolene'), but her husky tone is also amazingly fit to thrash out a punk tune in the form of Joan Jett's 'Different'; a song which featured on the rockstar's 2013 album 'Unvarnished'.

Watch Miley Cyrus and Joan Jett performing 'Different' here:

And what better song to collaborate on in honour of Miley's Happy Hippie Foundation? An organisation which aims to raise funds for both homeless young people and those in the LGBT community, the launch comes only months after Miley brought along an unusual guest at the 2014 MTV Video Music Awards; a homeless guy named Jesse with whom Miley made her acceptance speech for Video of the Year, drawing attention to penniless youths.

More: Miley Cyrus inducts Joan Jett into the Rock And Roll Hall Of Fame

'Our mission is to rally young people to fight injustice facing homeless youth, LGBT youth and other vulnerable populations' is the mission statement of Happy Hippie according to the website, which also explains how donations are used to create digital support groups and fund Hollywood homeless centre My Friend's Place.

More: Miley Cyrus promotes homeless charity at MTV Video Music Awards

Joan Jett is only the first of Miley's Backyard Sessions, with Ariana Grande among later collaborations.

Joan Jett at Rock and Roll Hall of Fame inductionJoan Jett recently got inducted into the Rock and Roll Hall of Fame