The main characters include 3 pairs of meisters and weapons—Maka and Soul, Black Star and Tsubaki, and Death the Kid with both Patty and Liz. Description from new-anime.com. I searched for this on bing.com/images
Celtic . . . Rock? Awesome, whatever it is. I think Fairy Tail has one of the best Anime soundtracks ever. Fits the anime well, though. It's about Wizard Guilds, and moves at a much faster pace than Bleach and Naruto.