Check this out...I was listening to the Halo2 soundtrack "Peril" on my comp the other day, when my mother asked why I was listening to Enya.
I explained that I wasn't and that this song is from Halo2. She then continued to go to youtube and play "Orinoco Flow" by Enya. Both songs have the EXACT tune and flow. Now I never seen and news relating to Enya and halo, but the similarities are extremely close. Also, I never even seen any credit going to Enya from Bungie either. Check it out for yourself, It is actually quite interesting. Find the song "Peril" yourself, but go to Youtube.com and search for enya and "Orinoco Flow" should be the first on the list. I'm NOT blaming Bungie or anybody for plagiarizing even though it may sound like it, I am just pointing something out. If Enya inspired Marty to do Peril with their tune, then I wonder if other Enya or other bands inspired any other soundtracks.