"Taim i mo Shui", by Cor Thaobh a' Leithid. This is a choir made up entirely of Irish traditional singers from the parish of Gaoth Dobhair (Gweedore) in Co. Donegal, each of them a well-known singer in their own right, who have gotten together to make what is best thought of as a sean-nos choir. Led by Dominic Mac Giolla Bhride, they have been making waves these past few years with their renditions of Irish-language traditional songs.
Suantrai na Slaneatheoir.  Here's a song by Sean Og O Tuama and Rionach Ui Chuill, it's a lullaby to the Christ Child. Very Christmas.
Loch Lomond. Who doesn't know this song? One of countless songs of loss and exile from the Celtic countries, the speaker in this song says he'll make it home to Loch Lomond faster by dying than by taking the "high road" of life. Good to have in our back pockets for Robbie Burns' celebrations.
Mo Ghile Mear. I got pointed to Micheal O Suilleabhain's arrangement of this from our dear friends in the Cois Claddagh Chamber Choir. An Irish traditional song whose title means "The Gallant Boy", it is a vision song wherein the Goddess Eire laments Bonnie Prince Charlie's loss at the Battle of Culloden. It's a bookend to the Skye Boat Song, which we already sing.
Nos Galan (Deck the Halls). Everybody knows this song, but most don't know that it's actually a traditional Welsh New Year's Eve carol, that says "Cold is the man who doesn't love the mountains of Wales, and cold is he who will not get together with friends to ring in the New Year".
My Love is Like a Red Red Rose. We heard the Near North Voices Choir perform this at our February concert, and backstage, the choir came to me and whispered that they'd like to take a crack at it. My choir has great taste!
Ambell y Gan. Keen to get more Welsh in the choir's