"Dúlamán"(seaweed, in Irish) is an age-old song that will stay stuck in your head once you hear it, and this version from the Choral Scholars of University College Dublin is particularly catchy. It's infectious and burrows into your brain, and before you know it, the ancient Irish rhythm will be stuck with you for the day. The song itself is an old working song from Northern Ireland. Dúlamán references two types of seaweed, one for eating and one for dyeing.