Here it goes, they're one of my favourite composers. They're called Dolce Triade and the interesting but strange, at the same time, fact about them is that their two only CDs are composed for the series Last Exile. Which is one of my favourite animes (I would tell even the favouritest one) and it's something I'd recommend to whomever. If you'd like to watch something that will be worth it, Las Exile fits in for real. I'm meaning it.
Now going back to the music, Dolce Triade may seem kind of experimental music due to range of melodies they have composed, because even known they've got only 2 CDs, their style is totally open and includes a wide variety of harmonies, BUT without leaving some of the factors by which they get identified. And it's not even a well-knwon group, but hell if it is good!
This beauty from CD2:
And a curious song from CD1, it reminds me of Beatles a litlle: