The first part is total mind-melting psych drone, like Glen Branca in a kilt. Not only does it sound nothing like what I thought bagpipe music was supposed to sound like, it pretty much caved in my skull. And I do not take drugs. Part 2 sounds more bagpipe-y, and gets into subtle minimalism territory.
Julia Wolfe "Lad (for 9 bagpipes)" parts 1 and 2
from the album "Dark Full Ride"