Shawn Mendes was attended last night (13) on the talk show "Late Show With David Letterman", promoting his new single "Something Big".
Accompanied by a gospel choir, the Canadian only used his guitar to the performance, the first song on American television.
The music will feature on the singer's yet-untitled debut album, which will also include the hit single "Life Of The Party".
The material is planned for release in the first half of 2015.
Check out the performance below: