who wrote impossible
Impossible  is a song by Barbadian recording artist Shontelle. It is the lead single from her second studio album, No Gravity (2010). The song was written by Arnthor Birgisson and Ina Wroldsen, and produced by Birgisson. It was released digitally on 9 February 2010. Impossible peaked at number 13 on the Billboard Hot 100 in the United States, number 33 in Canada, number nine in the United Kingdom and number five in Denmark.