Ed Sheeran faces copyright infringement trial over alleged song copying.

The heirs of Marvin Gaye's co-writer, Ed Townsend, claim that Ed Sheeran's "Thinking Out Loud" violates the copyright of the soul classic "Let's Get It On." Attorney Ben Crump, representing the heirs, said that he has "smoking gun" proof that Sheeran merged the two songs in concert. Sheeran's lawyer, Ilene Farkas, insisted that Sheeran and his co-writer wrote their song independently and did not steal from Townsend and Gaye. The trial is expected to last up to two weeks.