There are a few times in one's life when one is moved beyond words by music. I've been blessed with one such moment recently!
If anyone in India has access to Animax (Yep! I'm preening here! :P), they'll know of a series that goes by the name of Black Butler. It's also known in the lands of it's origin as Kuroshitsuji (黒執事). The ending theme of that Anime is a song by Kalafina, "Lacrimosa". And I should say... I am impressed. And you know, one internet search led to another and after listening to a few more of their songs, I've finally become a fan!
The group was formed by the very famous and enormously talented Yuki Kajiura. For those who're not sure who she is, she was the composer of many famous Anime and Games. Think Tsubasa Chronicles, .hack//SIGN, Madlax, Mobile Suit Gundam SEED and many more!
The members in the group are Kubota Keiko, Otaki Wakana and Hikaru Masai. Wakana holds the highest note while Kubota manages the lower notes and all three together, the ensemble is quite astounding! Their genre is closest to baroque Music. It's evident the singers put their hearts into the songs with lyrics that are unique to their genre. And for those who don't understand Japanese, they'll also be able to enjoy the music thanks to the wonderful composition from Yuki Kajiura.
I'd suggest you give their songs a try. You will not regret it! :)