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: Rigged Ship, The
M: 6/8
L: 1/8
Q: 140
K: Gmaj
"G" A | "Em" B2 E EFE | BAB "G" d2 B | "D" A2 F DED | FEF A2 A |
        "Em" B2 E EFE | BAB "G" d2 B | "D" A2 F DEF | "Em" E3 E2 :|
B | "Em" e2 B e2 B | "C" efg "D" f2 e | d2 A d2 A | def "Em" e2 B |
         e2 B e2 B | "C" efg "D" f2 e | "G" d2 B "D" A2 F | DEF "Em" E2 :|