compiling times?

[Jay Hamilton, Sound and Silence]

I'm xp celeron 512ram
I am still trying to put together a more complicated score of 7 
different instruments including piano.
I took and modified the example in Chapter 3 of the manual
I use jedit to work it out.

But, though I get a log file saying
parsing.......
After 30 minutes nothing else is happening, no .ps or .pdf

I tried to look at the processes to see if I could figure out if 
compiling was taking place but I couldn't recognize which/what might be 
lily as nothing seemed to fit.

I'm sure there's a way to find 'mistakes' if that's why there's no 
output but so far I've not been led by the nose to it.

So please some directions.

\version "2.6.3"
\header {
 title = "Jat 10"
 composer = "Jay Hamilton"
 subtitle = "suite for alternating instruments"
 copyright = "CC some rights reserved Jay Hamilton 2005"

}
#(set-global-staff-sice 20)
global = {
   \time 4/4
}
Key = { \key c \major }

flute = \relative c' {
   \Key
   c1 c c
}

flute = [
\global
\set Staff.instrument = #"Flute"
\clef treble
\context Staff <<
\flute
>>
}

clarinet = \relative c' {
   \Key
   c1 c c
}

clarinet = [
\global
\set Staff.instrument = #"Clarinet"
\clef treble
\context Staff <<
\clarinet
>>
}
violin = \relative c' {
   \Key
   c1 c c
}

violin = [
\global
\set Staff.instrument = #"Flute"
\clef treble
\context Staff <<
\violin
>>
}
xylophone = \relative c' {
   \Key
   c1 c c
}

xylophone = [
\global
\set Staff.instrument = #"Xylophone"
\clef treble
\context Staff <<
\xylophone
>>
}

%piano parts
rh = \relative c' {
   \Key
   c1 c c
}
lh = \relative c {
   \Key
   c1 c c
}
PianoRH = {
   \clef treble
   \global
   \set Staff.midiInstrument - "acoustic grand"
}
PianoLH = {
   \clef bass
   \global
   \set Staff.midiInstrument = "acoustic grand"
}
piano = {
   \context PianoStaff <<
   \set PianoStaff.instrument = #"Piano"
   \context Staff = upper \PianoRH
   \context Staff = lower \PianoLH
   >>
}
trombone = \relative c {
   \Key
   c1 c c
}

Trombone = [
\global
\set Staff.instrument = #"Trombone"
\clef treble
\context Staff <<
\trombone
>>
}
cello = \relative c {
   \Key
   c1 c c
}

cello = [
\global
\set Staff.instrument = #"Cello"
\clef treble
\context Staff <<
\cello
>>
}
\score {
   <<
   \context Staff = flute
   \context Staff = clarinet
   \context Staff = violin
   \context Staff = xylophone
   \context Staff = piano \piano
   \context Staff = trombone
   \context Staff = cello
   >>
   \layout {
       \context {
       \Score }
   }

\midi {tempo 4 = 60 }
}

Thanks
Jay

--
Childhood is a Journey not a race- Emma Sadinsky aged 8
Jay Hamilton
Sound and Silence
206-328-7694
www.soundand.com