piano_reduction & grand_score

[neuro]

Question of a Newbies...
I am useing Lilypond 2.0.1 .
Suppose I have 3 part .ly files :
horn.ly , clarinet1.ly , and clarinet2.ly .

I'd like to have 
1) a piano reduction score, in concert pitch, from the 3 part score, say, 
piano_reduction.ly
and 
2) a grand score, with all the clarinet parts in just one staff, say
grand_score.ly
thus, there will be two staff here, one for horn, and one for 2 clarinets,
and its midi (with every part altogether).

Can anyone be kind to show me how to do this?
Or show me where to find the answer from the lilypond 2.0.1 document :
http://neuro.ohbi.net/lilypond/Documentation/out-www/

Thank you very much.

Neuro
===

# cat horn.ly
hornpart = \notes  {
\property Staff.midiInstrument = "french horn"
\property Staff.instrument = "Horn in F"
\property Staff.transposing = #-7
\time 4/4
\key af \major
\clef treble
af'1
}
% end of horn.ly

===

# cat clarinet1.ly
clarinetone = \notes  {
\property Staff.midiInstrument = "clarinet"
\property Staff.instrument = "Clarinet 1 in Bb"
%
% another question here: How to make the flat sign here ?
%
\property Staff.transposing = #-2
\time 4/4
\key ef \major
\clef treble
bf'2 c''4 d''4
}
% end of clarinet1.ly

===

# cat clarinet2.ly
clarinettwo = \notes  {
\property Staff.midiInstrument = "clarinet"
\property Staff.instrument = "Clarinet 2 in Bb"
\property Staff.transposing = #-2
\time 4/4
\key ef \major
\clef treble
g'2 af'2 
}
% end of clarinet2.ly

===

# cat piano_reduction.ly
%
% I know this is wrong ...
% But  I don't know what is right.
%
\include horn.ly
\include clarinet1.ly
\include clarinet2.ly
\include "english.ly"
\include "paper20.ly"
\version "2.0.1"
\header { }
\paper  { }

\score { \note
<< 
\ new \hornpart 
{ \transpose c f  \hornpart }

\ new \clarinet
{ 
\transpose c bf  \clarinetone
\transpose c bf  \clarinettwo
}
>>

\paper {}  
\midi { \tempo 4 = 80 }  

}

% end of piano_reduction.ly

===

Thank you very much


neuro
address@hidden
address@hidden
http://neuro.ohbi.net