Jessie J Debuts Kick-Ass 2 Soundtrack Song
Star gives fans a sneaky snippet of her track from forthcoming movie...
The pop star, who recently announced her departure from The Voice, shared a 50-second clip from Hero via social networking site Twitter.
She tweeted: "I wrote the soundtrack song for #kickass2 #themovie here is a little taste! #superheropose."
The eagerly awaited graphic novel adaptation is out in UK cinemas on 14 August.