The song is atleast 60 years old (probobly more). I believe it's called 'Little Breeze' and they used to teach it to beginner piano players back in the 1940's. The only lyrics I can remember are "Little breeze from the south, you can sing though you have no mouth".

Please let me know if you have the sheet music, or know the rest of the lyrics, or know anything about the song.

....Thanks