Bagpipe "music"

Last night after work, I was peacefully doing yoga at home when all of a sudden, I heard this horrible cacophony. I went to the window to see what it could be. It turned out to be two people with bagpipes standing right outside my apartment building. Is this the equivalent of Christmas caroling here? I don't know. No one was gathering around to enjoy the concert.

Anyway, although these people were technically playing the bagpipes, I wouldn't call them musicians. In fact, it was as if two people who had never seen or heard bagpipes before had picked them up on the street and randomly started poking at them and blowing into them. There was no discernable melody or harmony, and they were not in unison. It was just loud noise. What was that about?

Eventually they went away. (Actually, they were there for a mercifully short amount of time.) Maybe people tipped them to stop playing.