Isis is a Los Angeles, California-based post-hardcore/post-rock/experimental band that has borrowed and helped to evolve a sound pioneered by the likes of Neurosis and Godflesh. Their music consists of lengthy songs that focus heavily on repetition. Because of this and the fact that they tend to bury the vocals, the band use their music as a vehicle for emotion, and are not concerned with getting played on the radio. This element of sophistication and the subsequent breaking of genre boundaries leaves a cloud of inaccessibility over the band; one could say they appeal to a "niche market" in music.