>>> ed sheeran is known for pouring his heart out. ♪ >> reporter: but now the crooner -- ♪ keep this love in a photograph ♪ >> reporter: -- is giving us a snapshot of a different struggle. >> i was a weird child. >> reporter: his childhood battle with struggling at the freeing voices changing lives gala put on by the american toutant for stuttering in new york says he thinks it stemmed from a procedure that might have damaged his nervous system. >> i had a port wine birthmark where i got lasered off and one day they forgot to put on the anesthetic and ever since then had a stutter. >> reporter: he shared how eminem unknowingly helped him stop his stutter. when he was 9 sherron's dad gave him "the marshall mathers" lp put on repeat to practice speaking. >> i learned every word of it back to front by the age i was 10 and he raps very fast and