An enduring presence on the Orange County punk rock scene, D.I. are the brainchild of singer and lyricist Casey Royer, the sole constant throughout the band's four-decade career. Devoted to speedy tempos, simple melodies that reveal touches of surf and pop, pointed lyrics that deal in dark humor as often as not, and plenty of buzzy guitar chords, D.I. were at once one of the archetypal OC bands while developing an individual sound and style that stood the test of time. 1986's Horse Bites Dog Cries was their initial breakthrough album and established the template for their approach, 1994's State of Shock captured them in strong form after a five-year studio layoff, and 2021's Greatest Hits A-Z was devoted to new recordings of highlights from their back catalog, with the tracks sequenced in alphabetical order.