Thammuz is a Spanish heavy metal band formed in 1981. They are known for their dark and atmospheric sound, which incorporates elements of doom, thrash, and progressive metal. The band has released several albums over the years, including "Sons of the Occult" (2018), "Guayota" (2019), and "Into the Great Unknown" (2021). Thammuz has toured extensively throughout Europe and has shared the stage with bands such as Mercyful Fate, King Diamond, and Candlemass.