Bonjour Philippe,
Tu as simplement oublié de mettre... la clef !
Ci-dessous un essai avec une petite modif pour (je pense) aller vers une présentation ad hoc :
\version "2.18.2"
Armures = \relative c' {
\override Score.BreakAlignment.break-align-orders = #(
make-vector 3 '(
span-bar
breathing-sign
staff-bar
clef
key-cancellation
key-signature
time-signature))
\clef treble
\key c \major s1
\set Staff.forceClef = ##t
\clef treble
\key g \major s1
\set Staff.forceClef = ##t
\clef treble
\key d \major s1
\set Staff.forceClef = ##t
\clef treble
\key a \major s1
\set Staff.forceClef = ##t
\clef treble
\key e \major s1
\set Staff.forceClef = ##t
\clef treble
\key b \major s1
\set Staff.forceClef = ##t
\clef treble
\key ges \major s1
\set Staff.forceClef = ##t
\clef treble
\key fis \major s1
\set Staff.forceClef = ##t
\clef treble
\key des \major s1
\set Staff.forceClef = ##t
\clef treble
\key aes \major s1
\set Staff.forceClef = ##t
\clef treble
\key ees \major s1
\set Staff.forceClef = ##t
\clef treble
\key bes \major s1
\set Staff.forceClef = ##t
\clef treble
\key f \major s1
}
\score {
\new Staff \Armures
\layout {
\context {
\Score
\remove "Bar_number_engraver"
}
\context {
\Staff
printKeyCancellation = ##f
\override Clef.full-size-change = ##t
\remove "Time_signature_engraver"
}
}
}