How do I change the Lilypond title font?

Question

This should be fairly simple but I'm getting lost in instructions. What is the easiest way to change the font for the tune title only? I don't want to change the whole family of fonts for the whole sheet.

The font I'd like to use is MuseScore's Edwin. If I use the paper block to change the font name to "Edwin", the font is not found. I assume I'd have to specify the path to it.

Answer 1

Seems to be resolved with \markup and \override, plus specifying the font path:

#(ly:font-config-add-directory "D:/fonts/MuseScore/")

\header {
  title = \markup { \override #'((font-name . "Edwin") (font-size . 6)) "My Tune" }
}

This works. The code can be extracted into a function, and/or into a separate file:

customTitle = #(define-scheme-function
  (title) (markup?)
  #{
     \markup { \override #'((font-name . "Edwin") (font-size . 6)) #title }
  #})

which is then included and used as:

\header {
    title = \customTitle "My Aria"
}

As Abou Samra Jean suggests, it is also possible to create a markup function as

\markup edwin = \markup \override #'((font-name . "Edwin") (font-size . 6)) \etc

which is then used

title = \markup \edwin "My Title"