Just when you thought you couldn't be more excited about Disney's Moana, Dwayne Johnson ups the ante with an adorable video. The actor took to Instagram on Monday to share a heartwarming clip of him and the film's songwriter, Lin-Manuel Miranda, singing the Beauty and the Beast hit "Gaston." Not only do the duo show off their impressive singing voices, but Johnson also flaunts his huge biceps for the camera. The Hamilton star recently took over Disney Animation's Instagram to promote the upcoming film by covering some of Disney's most iconic tunes including from Aladdin, Newsies, The Little Mermaid, and Mulan. See their amazing duet above, and then watch the trailer for the upcoming movie.