Dia daoibh, a chairde!
Is mise Kevin. Tá Béarla agus beagán Gaeilge agam. However, as this is an English-language forum, I'll stick to posting as Béarla.
I was first introduced to Celtic Woman in 2015 when I had to research Irish music for a performance of Brian Friel's Translations that I was sound designing. While it wasn't suited to the play, I grew quite fond of Celtic Woman's music and have been hooked ever since, so much so that I wrote a paper and a presentation on their renditions of "Sadhbh Ní Bhruinneallaigh"/"Sive" and "Mo Ghile Mear" for one of my uni classes.
Since declaring a favorite performer seems to be the trend in these intro posts, I would say mine is probably be Éabha McMahon.
Every Celtic Woman member is a great choice for a favorite and the amazing Éabha is no exception.
Welcome to the forum!