What's the most beautifully sung anime song you've heard?

Lilium from Elfen Lied.

For some reason I really amor the song Morning Grace from Princess Tutu -opening song.

It's like a lullaby, and I'm learning how to sing it (it's in Japanese which makes it harder to memorize than usual :D). The voice is so light, I consider the song to be beautiful! ^_______^

I really amor this song <3 The ending song to Loveless. I fell in amor with it the first time I heard it and saw the lyrics translated. So beautiful. I was going to post Simple and Clean por Utada Hikaru but a lot of people reject Kingdom Hearts as anime related so.

i have a couple
1) mosaico karera, ed for gode geass.
link

2) omna magini
link

3) still doll, vampire knight
link

4) a song of fuego and storm- tsubasa
link

5) synchronicity- also tsubasa
link

Aiyaa Four Thousand Years is a beautiful song. I don't care that it's APH. I amor this song. The lyrics are beautiful and it's a very sweet song. I even have the last line quoted in my motto. I simply amor this song.

White Destiny from Pretear. Morning Grace from Princess Tutu and Aiyaa Four Thousand Years were my two parte superior, arriba candidates, but since they're taken, I'll go with my current favorito! song. I mean, just listen to it! This song is the reason I adore Yoko Ishida(she sings it, btw)!<3333 Pretear is the only anime I've ever watched where I didn't start skipping the intro after the first few episodes.

Another anime song I really amor is Brothers from FullMetal Alchemist. Vic Mignogna's English version is just so gorgeous, I can't even begin to explain it! It's even sadder if you've seen the anime and tu know what Ed's been through... T~T

Brothers:
link

White Destiny:

here is some of my favs link
link

This was the 12th naruto Shippuden ending! I was going to do Gravity from Wolf's Rain before I realized that even the Japanese singer sang it in english... strange. Anyway, enjoy!

Vongola Family - Mirai no Oozora E

kimi no omoi egaita yume atsumeru heaven
link

koyoi eden no katasumi de
link

rolling star
link

tonight, tonight, tonight

this ending

La Crimosa from Kuroshituji Is the best song that I've heard..and it's my FAV!

3rd opening song from naruto Shippuuden,Blue bird!!!!! It's so beautiful.And the 2nd opening song from naruto Shippuuden,Distance.'Cause that song is so deep and touch,that song it's always make me remember about my friends.

fuyu no semi from winter cicada

Definitely the ending to kuroshitsuji II. It is one of Matsushita Yuya's most heartfelt songs.
Some other good ones are:
The opening to Mayo Chiki! "Be Starters!"
link
The 15th ending to naruto "You Can Do It"
link
Ikuto's character song from Shugo Chara!
link
The segundo opening to kuroshitsuji (the segundo part of Monochrome no Kiss)
link

This one TT^TT