As part of my Nordic Seven Deadly Sins, I choose Denmark for Gluttony, for love of beer,
(and don't ask why he's not lust, I wanted Finland for that one)
Written by Icelandic composer Jón Leifs in 1964, the piece called Hekla, Op 52, requires four sets of rocks hit with hammers, steel plates, anvils, sirens, cannons and metal chains to play.