\mark before \key

[Laurent Martelli]

I am using this little hack to number exercices in Arban's trumpet
method :

  \mark "\\hspace{-2cm} \\raisebox{-0.7cm}{\\textbf{2}}";
  \time 2/4;
  \key f \major;

It works fine except that the mark is placed after the \key whose
width may vary. Of course I can adjust the hspace for each key, but
I'd rather not have to do this.

Thanks in advance,
Laurent

-- 
Laurent Martelli
address@hidden              http://www.linuxfan.com/~laurent