Render tune title, subtitle and composer in Latex/HTML and not in the image. This way the titles remains a constant size even if the image needs to be scaled. And we have that text appearance under our control. I can't find a way of switching off the tune title in abcm2ps, and have worked around by setting the title format to Y0. Y is not a defined ABC header and is not found in any Dottes tune.

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