When it's just lagom

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.

Simo Häyhä was a Finnish sniper in WWII who, with over 700 kills in 105 days, can be thought of as the most deadly human in history. The Russians refered to him as The White Death.