Curiosity, really. I’m not asking is it right or wrong.
Although I play in sessions once or twice every week, I don’t go to a lot of different sessions, just a few. Now and again I come across someone whose "participation" in the session is to shout / shriek / yell something like Yeeeeeeeeeeeeehaaaaaaaaagh (usually during the B part of a reel). Sometimes the wording is different and consists of a falsetto voiced DDDRRRRRRRRRYOWWWW! and sometimes just a sort of yelping YOUW.
What I want to know is whether this is considered a regular part of Irish Music, or is it an import from, perhaps, C&W music. Or is it just an annoyance? Is there a "right" time and place for it.
Personally I dislike it (usually it startles me, and puts me off my stroke), but is it part of the tradition?