In my opinion, this is the best diatonic version that I could find here or anywhere else. It is my own adaptation for the key of C, but works in A and G as well. I haven't tested any other keys. I will admit that I take some liberties to "Jazz it up" a bit for the harp. I mean, it's not like we're playing an ocarina right? Edit: You can omit the ~-6 and just play -6 if that's easier or as you like.
7 -6 6
7 -6 6
7 -6 6 ~-6 6 -5
5 -4 5 -7 7 -6
7 7 -7 -6 6
7 -6 6
7 -6 6
7 -6 6 ~-6 6 -5
5 -4 5 -6 -7 7
7 7 -8 7
-6 -6 -6 -6 -7 -6 -6 6 7 6
-5 -5 -5 -5 5 -5 6
-6 -6 -6 -6 -7 -6 -6 6 7 6
-6 -6 -6 -6 6 -6 -7
Repeat from the top.
Ending
7 -6 6
7 -6 6
7 -6 6 ~-6 6 -5
5 -4 5 -7 7 -6
7 7 -7 -6 6
7 -6 6
7 -6 6
7 -6 6 ~-6 6 -5
5 -4 5 -6 -7 7
7 7 -8 7
5 -4 5 -6 -7 7
7 7 -8 8 |