Three soundtracks worth of music, light and airy, countryside kind of music with both middle-European and Japanese influences, accoustic with harpsichord type strings, guitar, flute, tambourine, harp, violin... very light and relaxing, nice to listen to first thing in the morning when you want some tunes but nothing heavy or too driving.
I haven't listened to all of them all the way through yet but I really like what I have heard so far. :D The three soundtracks are called:
Haibane Renmei Soundtrack: Hanenone
Haibane Renmei: Petitnone ~Out Of Tracks~
Haibane Renmei Image Album ~"Sei naru Shoukei"~ (an image album, of course, being songs inspired by the series but were not IN the series... I think.)
The opening theme is, of course, the best but there's a wonderful song called "Wondering" off the first soundtrack that will bring tears to your eyes (well, it will if the anime moved you at all). It's a beautiful, wistfully sad song with Uillean pipes that would go well with Celtic Christmas music. ;)