Buscando, he encontrado esto:
"After ruling out all possibilities, I have concluded that the song is part of the shows original music score. The credits say that is performed by JOHN SWIHART. I looked him up on itunes, and a lot of his stuff sounds like the end credit song. So I guess maybe we'll be able to get the song if they come out with a greek soundtrack. But until that happens, well just have to replay the ending over and over"
Siento que no sean buenas noticias; lo cierto es que, después de escucharla, la canción me ha parecido preciosa.