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:Green Mountain Petronella
S: Nick Barber
C: Trad.
O: Newfoundland
R: Reel
Q: 140
K: G
M: C
L: 1/4
"G" D G G/F/G/E/ | "G" D B B>d | "D" c A A/B/c/d/ | "C" e d "D" d2 |\
"G" D G G/F/G/E/ | "G" D B B>d |
"D" c A A/c/B/A/ | "G" G B G2 :|\
|: "Em" g g "B" f f | "C" e/f/ e "Bm" d>d | "C" e/d/e/f/ "G" g/f/g/d/ |
"G" B A "D" A>d | "Em" g g "B" f f | "C" e/f/ e "Bm" d>d |\
"C" e/d/e/f/ "G" g/f/g/d/ | "G" B "D" A "G" G2 :|