I saw cutting edge last night.

Maggie Nicols and Phil Minton. Vocally improvising, looking like two mad old codgers down by the supermarket.
They sat on stage and writhed and sang and spat and ranted, giggled, howled.
Maggie proudly flapped her bingo wings and became the sexiest woman in the room, not bad for a 60 year old.
Phil made notes from his voice that split into three before they spewed from his mouth.

This music has been cutting edge since these two emerged in 1964. It's as cutting edge today and in the same way, discuss using both sides of the paper. It's as cutting edge, and primal as you want it to be.
If you are free today at 2pm, come to the Feral Choir at the Norwich Arts Centre.
Sorry it's a bit early for me to be articulate.
More later............................