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.

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−X: 1
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−T: Young Collins
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−M: C
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−K: G
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−L: 1/8
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−D2 \
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−|: "G" GABc d2 d2 | "C" c2 e2 "D7" A2 Bc | "G" d2 d2 "C" e2 dc |\
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−"D7" B2 A2 "G" G2 D2 :|
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−|: "C" E2 D2 EF G2 | "D7" A2 A2 "G" G2>A2 | "G" B2 G2 Bc d2 |\
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−"C" e2 e2 "D7" d4 |
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−"G" GABc d2 d2 | "C" c2 e2 "D7" A2 Bc | "G" d2 d2 "C" e2 dc |\
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−"D7" B2 A2 "G" G4 :|