This is done by
a) reducing the page margins
b) compressing the heading and removing all but Notes: fields.
The latter produced vertically smaller tune PDFs that will scale wider.
In the process, modify abctitle.py to extract the first of any header field, and
move formatting for a single tune into a .fmt file.
Also switch to Times New Roman for the main text. The music is set
with Postscript Times, so this is the easy approach to better typographic
consistency.
Add a list of tune first lines to the Booke. First, a small Python script to
filter a .abc file and spit out just enough to give a graphic of the first line
without the title. Then generate these graphics and generate a new section in the Booke
with a longtable of tune name and the first line graphic.