Sheeran portrayed a Lannister soldier who sang by the campfire and grabbed the attention of Maisie Williams' Arya Stark.

He crooned lyrics that George R.R. Martin wrote in his novels. In the book series, the song emerges in a plotline involving Tyrion Lannister.

WATCH: @edsheeran performs 'Perfect' on @GMA. #EdSheeranOnGMA pic.twitter.com/zJNMRSO035

— Good Morning America (@GMA) September 25, 2017

Sheeran also performed his new single \"Perfect\" off his latest album \"Divide\" as well as \"Shape of You.\"

WATCH: @edsheeran performs \"Shape of You\" on @GMA. #EdSheeranOnGMA pic.twitter.com/QcJpAWEIPP

— Good Morning America (@GMA) September 25, 2017
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