James Arthur belted his hit ballad "Say You Won't Let Go" on Tuesday's Tonight Show. The British singer-songwriter slowed down the tempo from the studio version and stripped back the arrangement to a somber acoustic guitar and piano.
Arthur showcased the full spectrum of his vocal talents, opening in a subdued croon and building to a climactic, soulful roar.
"Say You Won't
This article originally appeared on www.rollingstone.com: Watch James Arthur Perform Somber ‘Say You Won’t Let Go’ on ‘Fallon’