A MIDI of the first half is given right at the top of this thread. The complete tune as sheet music I found here. I tried it out with my software SonneLematine, of course transposed down to suit my bass-baritone, and found it a challenge. Girl Scouting seems to have the miraculous effect that even contraltos can reach a" - what do we need fairies for, then? Resp. would Girl Scouts actually hear the flowers ring? Or is that a hallucination due to exhausted breath? Keep singing till the lungs burst!
Alex