using ec-font-mftraced for headers only

[Stephen]

This post has a part for the developers to consider and for the users 
archive.

The part for the developers to consider is that Lilypond needs a display 
font for the header. Sometimes enlarging and enboldening a text font does 
not work as well as using a font that was designed to be displayed at  large 
sizes. Hence the distinction between a display font and a text font. 
Sometimes the same font will do for both, but not very often. It would have 
to be designed from the getgo (ie. beginning) to be good for both. Century 
Schoolbook is not such a font. It is a text font, not a display font.

As can be seen from the subject line, my question falls into two parts:

1) Supposing I like the new fonts for everything but the header, how do I 
selectively change the default header in my Lilypond projects without 
changing any of the other fonts. In "8.1.7 Font selection" 
make-pango-font-tree defines different fonts for different purposes, but how 
does one define a font to be used for Headers only?

2) In Windows I can only specify an Open Type or True Type font to be added 
to the pango tree. How can I select the original Type 1 font used for 
Headers in Lilypond 2.4? Also, which font was that?

Stephen