21 is the second extended play by American country music artist Hunter Hayes, released to streaming services on August 7, 2015. It is expected to be made available to digital retailers at a later date and serves as a prelude to Hayes's forthcoming third studio album, scheduled for released in the fall of 2015. 21 includes all of the digital-only singles releases from Hayes Spotify-exclusive "The Drop" campaign, led by the project's eponymous lead single, "21", released on May 21, 2015.

I Want Crazy is a compilation album by American country music singer Hunter Hayes, first released on April 3, 2015 by Atlantic Records. The album serves as Hayes' international debut studio album. I Want Crazy features songs from Hayes' two studio albums, Hunter Hayes (2011) and Storyline (2014), with two of the songs being re-produced by Ryan Tedder and Duck Blackwell, respectively. The album entered the UK Albums Chart compiled by the Official Charts Company at number 85 for the week ending June 6, 2015.