Released on Green Day's 2012 compilation The Studio Albums 1990-2009, "Having A Blast" captures the band's signature punk energy and melodic sensibility. The track features the characteristic interplay between Billie Joe Armstrong's vocals and Mike Dirnt's bass lines, reflecting the core sound that defined the group's career from their early days through the mid-2000s. As a staple of their discography, the song serves as a reminder of their ability to blend aggressive instrumentation with catchy hooks, maintaining relevance across decades of releases.