Mystical Magical Muses: "Celtic Woman," which airs Saturday, March 5, 2005 on PBS (from 7 to 9 p.m.), brings to the screen five exceptional new Irish stars in a spectacular performance recorded live at Dublin's prestigious Helix Centre. Performing some of the most beautiful and best-loved songs in the musical repertoire, the four singers - 15-year-old Chloë Agnew, Lisa Kelly, Méav Ní Mhaolchatha (who toured with "Riverdance," as Erin, the Goddess, and is seen in the above photo), Orlagh Fallon - and violinist Máiréad Nesbitt bring the Dublin audience to their feet over and over again.