Revise first line table. Treat the tune title as a paragraph (ragged right). Set the column widths to give a wider and hence larger first line tune graphic. Keep using the cropped first line graphic, and introduce our own gaps between lines to keep the tune separations clear. I did look at using the grpahics borders, but that gives left and right margins too.

X:1
T:Grandfather's Tune
S:Nick Barber
N:Change: Sloe.abc
R:Reel
M:4/4
Q:160
K:D
P:A
"D" F2A2 "A" B2c2| "D" dcde f2 a2| "A" g2f2e2d2| "A" c2B2A2G2|\
"D" F2A2 "A" B2c2| "D" dcde f2 a2|
"A" g2f2e2 Bc|"D" d2f2 d4 :| |:\
P:B
"A" e4 e4  | "A" g2f2 e4 |
"A" g2f2e2d2 | "A" c2B2A2G2|\
"D" F2A2 "A" B2c2| "D" dcde f2 a2| "A" g2f2e2 Bc| "D" d2f2 d4:|