(By request also posted in this thread.) Hekla by Jón Leifs is one of my favourite classical pieces ever for the following reasons:
It apparently holds the world record on being the
loudest piece of classical music ever written.
Percussionists needed: 19.
Percussion instruments, aside of the normal ones:
- wooden mallets + tree stumps
- anvils
- hammers
- corrugated iron sheets
- tuned rocks (= rocks in different sizes)
- sirens
- huge bells
- ship chains
- a shotgun
- a cannon or several
- most likely many more
There are of course many other awesome pieces by Jón as well, such as
Geysir and
Dettifoss that I would recommend.