Underoath Celebrates 20 Years of "Define the Great Line" in Phoenix

Twenty years after the release of Define the Great Line, Underoath returned to Phoenix to celebrate one of the most influential records of their career. The band's anniversary tour stopped at Arizona Financial Theatre on November 9, bringing a full-album performance of their 2006 release alongside supporting sets from August Burns Red and Atreyu. For longtime fans, the evening offered an opportunity to hear the record in its entirety, while the packed theater reflected the album's lasting presence in post-hardcore and metalcore.

Atreyu opened the night with a short but fast-paced set, wasting little time getting the crowd involved. Beginning with "Bleeding Mascara" and "Becoming the Bull," the California metalcore veterans worked across the theater's expansive stage as flashing lights accompanied their performance. The band's combination of melodic hooks and heavier guitar passages quickly brought movement to the floor, with "Ego Death" drawing an enthusiastic response from the pit before their set came to a close.

August Burns Red followed with a considerably heavier atmosphere. Thick fog rolled across the stage beneath deep red lighting before the opening riffs of "Composure" signaled the band's arrival. The Pennsylvania metalcore outfit immediately drew a physical response from the audience, with crowd surfers making their way toward the barricade as the band moved through familiar material.

Songs including "Back Burner" and "Behemoth" kept the momentum going, driven by the band's technical guitar work and tightly arranged breakdowns. Frontman Jake Luhrs moved across the stage with his microphone swinging, frequently engaging with fans gathered along the barricade. Between the dense instrumentation and the crowd's response, August Burns Red delivered a set that complemented the heavier side of the evening's anniversary celebration.

By the time Underoath took the stage, anticipation had built around the opportunity to hear Define the Great Line performed from beginning to end. Originally released in 2006, the album marked a significant turning point for the Florida band, pushing their sound toward darker, more experimental territory while retaining the emotional intensity that had established their place in the post-hardcore scene.

Rather than relying on an elaborate stage setup, Underoath kept the performance visually focused. An open stage and an extensive lighting arrangement placed the emphasis on the musicians and the material itself, with sweeping beams and sharp changes in color accompanying the album's shifts between atmospheric passages and aggressive breakdowns.

The decision to perform Define the Great Line in full gave the evening a different structure from a typical career-spanning set. Instead of moving between familiar singles from different eras, the band followed the record's original progression, allowing its quieter moments, abrupt transitions, and heavier compositions to unfold as a complete work.

For an album that helped shape the sound of mid-2000s post-hardcore, hearing the material two decades later offered an opportunity to appreciate how much of its musical identity remains intact. Its combination of dissonant guitars, layered vocals, and unconventional song structures continues to distinguish it from many of the releases that emerged during the same period.

Onstage, Underoath approached the material with the urgency of a band performing songs that still hold personal significance. The anniversary setting brought an added sense of occasion, but the performance never felt limited to nostalgia. The band's delivery emphasized the intensity of the original recordings while giving the songs the weight of twenty additional years of live experience.

The audience matched that intensity throughout the album, with a steady circle of movement forming across the floor and crowd surfers regularly making their way toward the stage. Fans who had followed Underoath since the record's original release shared the room with a younger generation of listeners, illustrating how far the album's influence has extended beyond its initial audience.

Following the complete performance of Define the Great Line, Underoath returned to selections from elsewhere in their discography, eventually closing the evening with "A Boy Brushed Red Living in Black and White." The longtime favorite provided a fitting conclusion, connecting the anniversary celebration with an earlier chapter of the band's career.

With Atreyu and August Burns Red helping set the tone, Underoath's Phoenix stop brought together three bands closely associated with the evolution of heavy music throughout the 2000s. At the center of the evening was Define the Great Line, a record whose influence continues to reach new listeners twenty years after its release.