There's a woman here in Chicago who is remarkable at funerals (and weddings), she sings a song called "How Bright is the Day" softly during communion mediation and it's beautiful. It's sung to the tune of Rosin the Beau. She also sings Ave Maria in Latin which I think is gorgeous no matter what the occasion. She has a few other Irish/Funeral appropriate songs here: http://www.cdbaby.com/cd/coconnell2