Shawn Mendes performed his dynamic new ballad "Mercy" on Thursday's The Tonight Show. Backed by mallet drums, electric guitar, bass and piano, the young singer-songwriter went from a hum to hard-hitting, melismatic vocal runs.
During his Tonight Show visit, Mendes also assisted Jimmy Fallon and the Roots by singing Twitter parody lyrics submitted with
This article originally appeared on www.rollingstone.com: Watch Shawn Mendes Perform Soaring Ballad ‘Mercy’ on ‘Fallon’