Beyoncé debuts charity single God Bless the USA

Beyoncé is releasing her second new single in as many weeks, following Run the World (Girls) with new charity track God Bless the USA. She unveils patriotic power-ballad on Piers Morgan Tonight, with proceeds going to families of 9/11 victims.God Bless the USA was written and originally released in 1984 by country musician Lee Greenwood, and was played at this year's Republican party convention.