With her pieces in Lotr, I think Enya would be a perfect choice to conduct some of the music in PC. I believe she has the perfect voice for this type of fantasy, very emotion bending.
Enya is the best. I love her. She's got to be my fave female singer besides Lacey from Flyleaf.
She reminds me of Imogen Heap and vice versa, in the song "I Can't Take It In" from the LWW soundtrack, which fit perfectly into the movie, and she'll/she'd fit perfectly into PC (either Imogen or Enya). "Only Time" by Enya..well I have a long story on that song and me..kinda sad..ook im just going to say it rite along about now.. :
While pregnant with me, my mom used to play Only Time with my dad. Ever since I can remmeber I loved that song, and always cried when I heard it. Im obsessed with that song. And then, one day my mom told me that its my dads fave song and that he would always play it to me until then he stopped playing it to me and the last time he ever played it to me was the first time he saw me. I hope this doesnt sound (which it does) like I love my dad cos I dont. He left my mom, and hes never met me after that one time after me being born. He abandoned us. But i thought it was amazing how that was liek 'his' song and how I was obsessed with it.
What i mean is that ENya can convey emotions in her singing and music quite well.