These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Celtic Thunder
Fan Community Nickname: Thunderheads. There are names for fans supporting a specific lad, such as Byrom's Babes and Ryan's Angels.
Ryan: "Ride On," "Midnight Well," "Black is the Color" "Heartbreaker" "Desperado"
Keith: "Lauren and I," "The Dutchman," "Mountains of Mourne"
Damian: "Buachaill on Eirne (Come By the Hills)," "Home," "Puppy Love"
Neil: "Hallelujah," "Noreen," "Past the Point of Rescue"
Emmet: "This Is The Moment," "Kindred Spirits," "Isle of Hope, Isle of Tears"
As a group, "Ireland's Call," stated by the members of Celtic Thunder themselves. Fan's respond to the first note! If you go to one of their shows and they haven't sung it, don't leave—show's not over. (Sadly not included in the soon to be released show, MYTHOLOGY.)
According to reviews of the concerts on the forum at celticthunder.com, Ireland's Call is included in the concerts.