Busking clip from the feature chiller Graders. This is the theme song Return To Me , sung by Joanna Kaczynska and Agnieszka Bresler, guitar by Emma Hindle. It was composed by Marlene MacKenzie and lyrics by David Hutchison. The idea for the song came from the "Return To Lochinver" stamp on wooden fishboxes . Lochinver , a fishing village in the Scottish Highlands was the main location used for the fictional village of Innisaig in the film.