<Table> <Tr> <Td> "Colors" (2016) </Td> <Td> "Castle" (2016) </Td> <Td> "Closer" (2016) </Td> </Tr> </Table> <Tr> <Td> "Colors" (2016) </Td> <Td> "Castle" (2016) </Td> <Td> "Closer" (2016) </Td> </Tr> <P> "Castle" is a song by American singer and songwriter Halsey . Originally recorded for her debut studio album, Badlands (2015), it was re-recorded for the soundtrack to the 2016 film The Huntsman: Winter's War . It was released on April 9, 2016, by Capitol as a promotional single from the record . "Castle" was co-written by Halsey and the track's producer, Lido . The song was used in commercials and in the teaser trailer to promote the film . The song has background vocals of a choir singing Agnus Dei . She is singing about taking the throne and the kingdom is locked up which is a reference to her album Badlands . </P> <P> A "Behind - the - Scenes" video was released for the song on Halsey's official Vevo channel on YouTube on April 8, 2016, one day prior to the single's digital download release . Five days later, on April 13, 2016, the official music video was released on Halsey's Vevo account . </P>

Who sings the song at the end of the huntsman winter's war