Taken from gamefaqs:

"Released in C74 just recently, it's just music box arrangement from all the themes that Shikata Akiko does in Ar Tonelico 1-2, with 2 original themes."

http://rapidshare.com/files/142385903/Akiko_Shikata_-_Kara_Cola___Hymmnos_Orgel_Collection__.zip

thank u!