Hunter Hayes 21Watch at the source

21 is an energetic country-pop track by American singer Hunter Hayes, released on May 21, 2015, as the lead single from his third studio album, “The 21 Project”. The song celebrates the carefree spirit of youth and the excitement of turning 21. The official music video, directed by Kristin Barlowe, complements the song's lively vibe with visuals of Hayes performing amidst vibrant party scenes. "21" showcases Hayes' evolution as an artist, blending traditional country elements with pop-rock influences.