Music You're Hot Heidi's Theme Soundtrack to the film Somersault. The description below this is about the film Somersault and not I want To Kiss You. Exploring the themes of teenage sexuality and emotion, Somersault is about a 16-year-old girl named Heidi (Abbie Cornish) who runs away from her Canberra home to the ski fields of Jindabyne in New South Wales. There she meets Joe (Sam Worthington), the son of a local farmer, and tries to form a relationship with him, despite his difficulty in expressing his emotions. He also seems to be unsure of his sexual orientation, while having better than average luck meeting girls. The soundtrack is written and performed by Australian band Decoder Ring. Some scenes were shot at the Ryrie homestead at Michelago, New South Wales.