Hellhammer has been played on NTS over 10 times, featured on 12 episodes and was first played on 25 August 2013.

Hellhammer was an early-1980s extreme metal band from Switzerland and popular briefly in Europe in the mid-1980s. They were a vital influence on black metal, death metal and doom metal, although their sound is most accurately described as mid-paced, proto-black metal (with exceptions such as the doom paced "Triumph of Death"). Members went on to form the massively influential band Celtic Frost.

Guitarist/vocalist Tom Gabriel Fischer (then known as Satanic Slaughter) and bassist/vocalist Steve Warrior formed the band in March 1982, originally naming it "Hammerhead"….