ok, I discovered the track where the girl is singing i have been over the rainbow. It's by Mort Garson, a guy who was experimenting with the first moog synthesizers. It's recorded in 1969, some tracks sound alot like the first NES games.
the tracks that are played in the mix are: Blue poppy and I've been over the rainbow. From the album wozzard of iz (no not wizzard of oz!)
i'm interesed in this type of music right now :)