I think this course is important,as are comhaltas examinations.
they are a useful focus,but they dont necessarily mean ,that when one has completed the course,that one has arrived as a traditional musician,they are just a starting point.
the best experience for traditional musicians,is to listen to source musicians /singers[in whatever genre,be it MissippiJohnHurt,RoscoeHolcomb,HarryCox,orElizabethCronin]then to go out and learn on the job,.
Stage craft can be learned from watching others[not necesarrily traditional musicians],
These courses are good,but they are just a beginning for the participants.Dick Miles