Zozobra was an American sludge metal band that was first conceived by Caleb Scofield during 2006. He was joined by Santos Montano for the band's first release, Harmonic Tremors, in 2007. Early Zozobra recordings had a lot in common with the experimental-hardcore of Old Man Gloom and symbolically shares a synonymous name. Zozobra toured the United States with Isis and Jesu in early 2007.