Principality of Sealand

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.

In Australia they have a lottery called "Slikpik". Which is very funny for danes, because it literly spells, "Lick D*ck" in danish.