Please always use the lilypond-user mailing list for usage questions
like this one.
The answer is very simple, just input the characters as usual in your
text editor
and make sure that the editor saves the file using a character encoding
called
UTF8.
I just noted that you use a very old version
Can you tell me how to get characters that do not have decimal ASCII numbers
into a TeX DVI document using LilyPond (my version is 2.4.6)? I want to print
music with lyrics in Slovak - which uses many accented characters - and also
with the copyright symbol ©. Except for ©, I can't find a way to pu