Yeh, how about Elephant 1994??
Personally though, I have no idea how to "insert a wedge" and that counts both for an elephant and Mr Finnissey.
Thal
If it's anything like Cage or Crumb, it's no harder than closing up a Cage or stealing away a Crumb; you just have to read the instructions (Latin helps, esp with Crumb!) And these works are NOT written for every performer, just to those few who feel attracted.
I know the Cage well (once I prepared my one and only Somer grand piano), yet I never crafted the fingering/wedgies to make more than a few pieces sound remotely valid, yet as I did it, and a few of students around me absorbed
some interest, and if that's all I could offer, let it be.)

I don't, yet, know Elephant (never heard it nor saw it), but anyone who can represent an Elephant musically, be my guest!!!

(I know Robert Plant of King Crimson has created a rather enormous work by that name, so please don't bring that up at this point!)
L