font size limitation ? in lilypond-book

[Albert Einstein]

I have created file *.lytex and I can't get *bigger font then 36pt for 
T1 encoding or 25pt without T1 encoding* in preambule of lytex.


Warnings after latex *.tex are:

LaTeX Font Warning: Font shape `T1/cmr/m/sc' in size <55> not available
(Font)             * size <35.83> substituted* on input line 17.


LaTeX Font Warning: Font shape `OT1/cmr/m/sc' in size <55> not available
(Font)              *size <24.88> substituted* on input line 17.

My lytex file is:

\documentclass[a4paper,12pt]{book}
\usepackage[T1]{fontenc}
\usepackage[latin2]{inputenc}
\usepackage[polish]{babel}
\begin{document}
\fontsize{55}{65}  Text that should be 55pt hight.

\begin[staffsize=24]{lilypond}
a b c
  \end{lilypond}
\end{document}

Albert