Dead Neanderthals is a two-person Dutch free-jazz band that has incorporated metal and grindcore.

[1] They have released several albums, many of which were based on improvisation, and have been called "one of Europe’s premier experimental free jazz duos.

"[2] The band is composed of two members: Otto Kokke on saxophone and synthesizer and René Aquarius on drums.

The Quietus described their 2012 album Jazzhammer/Stormannsgalskap as a mighty "pounding headache of rampaging blastbeats, distorted foghorn drones and radioactive seagull squalls."

[1] According to The Quietus, "Whether forcing the twitching viscera of free jazz through a grindcore blender, slicing the eyeball of European improvisation with a metal blade, or eviscerating the whole lot in a maelstrom of noise, the sax-drums duo of Otto Kokke and Rene Aquarius pay little heed to the boundaries of genre.