Wow, nice! I always love the unusual! Jimi Hendrix instead of the lute and accordion. Must have been an nice surprise and experience.

I like for instance those classical pieces that are more a cross over between classical and dance music (eg Canto Ostinato). Or one of the founders of Techno (Jeff Mills) who plays more and more in concert halls together with an complete orchestra. Unusual, but so cool!

Grotto, I guess a Cave, but I see more a house and woods, than a cave? :)