"Isis the band" in order to avoid any confusion with the Islamic State of Iraq and the Levant. The band reunited for a one-off show on October 13, 2018 (under the name "Celestial") at a benefit for the family of Caleb Scofield, the Cave In bassist who died in a road accident seven months earlier. Musical style and influences Turner cites Swans, Melvins, Tool, Godflesh, and Neurosis as influences to Isis' sound, saying "those bands laid the groundwork for us [...] we're part of a recognizable lineage." Early releases were derided as imitative of predecessors Neurosis, and he admits that the comparisons weren't "completely unjustified". However, material since (and including) Oceanic has not been so often likened to Neurosis; in fact, it has become the case that it is Isis who are being imitated in a burgeoning post-metal scene. In terms of categorisation, Isis have been described as post-rock, a genre which leans away from the traditional elements of choruses, verses, repetitive vocals, or fast riffing – the latter of which Turner describes as "guitar theatrics". However, post-rock arguably tends to have an essentially halcyon sound, one which rarely uses vocals and typically is devoid of distorted guitars. Isis, however, have origins in hardcore punk and metal, and use aggressive vocal styles similar to hardcore. Their music includes elements of hardcore, drone, ambient music, and post-rock, among others. Revolver critic Dan Epstein noted that "though [Isis were] originally lumped in with the hardcore and doom-metal scenes, the band has long since transcended the musical boundaries of those genres". However, their ongoing acceptance within the pantheon of hardcore music is attested to by Converge's Jacob Bannon, who has gone on record saying that "if I wanna listen to emotional music which I guess is contemporary [...] I'll listen to Isis or something like that – something that is emotional, powerful music." Turner, when asked to define Isis, described their sound as "avant-garde, drone-oriented rock, but that doesn't completely cover the bases". At the same time, he is reticent about settling on one label exclusively, and steers away from the use of specific genre labels – "'heavy, atmospheric, droning, post-epic, post-metal, shoegazer blah blah blah.'" When asked how he reacts to being asked to define Isis' sound, he admits "I never know what to say. I'm almost afraid of perpetuating a new tag." Likewise, he also describes their music using a slightly