Thanks for explaining everything for us, I liked that superball string drag technique at the end, it sounded like it could be used as an effect in tense or scary movie scenes.
The palm strike and the mallet technique one I was looking for a harp that really sounds like that similar what do someone really hear, what does it look like.
Here's an interesting question: how would you play the song "Piano Smasher" featured on the Blue Man Group album The Complex? The way they do it on the album is to turn the piano on its side and take a sledge hammer to the frame. As far as tuning is concerned, each octave on the piano was tuned to a specific note, so they could hit in the general area, and it would sound right. Can you do that tuning and pull that song off with the Palm Strike technique on Harp? Would seem to be a simpler solution (and less destructive...)
Bret Crow. This piece was written as a graphic score, not particular to the harp or really any instrument. It is a work of art and was incredibly creative, yet left much of the interpretation up to the performer. This type of score is not the norm in the classical music world, which made this even more fun to tackle!