Move Change: notice closer to the bottom of the tune graphic. I was using \begin{center}..\end{center} to centre the tune graphic, followed by the change notice, if any. But this leaves a paragraph gap after the center section and hence a gap between tune graphic and change notice. Change to use figures to position the graphic, include the change notice as a caption, and use {\centering} around the image to centre just the image.

X: 1
T: Shepherd's Hey
M: 4/4
L: 1/8
Q: 130
R: reel
P: (A2B2)6
K: Gmaj
P: A
"G" BcdB "C" c2c2 | "G" BcdB "D7" A2A2 | "G" BcdB "C" c2Bc | "D7" d2d2 "G" G4 ||
P: B
"G" B2G2 "C" c4 | "G" B2G2 "D7" A4 | "G" BcdB "C" c2Bc | "D7" d2d2 "G" G4 |]