En
solfège, une
clef (ou
clé) est un signe graphique placé au début de la
portée qui indique la hauteur des
notes associées à chaque ligne.
<score raw=1> \version "2.14.2" \paper { indent = #0 paper-width = #132 } \header { tagline = ##f } \score { \new Staff \relative c' { lef de Fa \set Staff.clefGlyph = #"clefs.F" \set Staff.clefPosition = #2 \set Staff.middleCPosition = #6 %\set Staff.middleCClefPosition = #6 c4 lef de Fa 3 \stopStaff \override Staff.StaffSymbol #'line-positions = #'(-2 0 2 4 6) \startStaff \once \override Voice.NoteHead #'stencil = ##f \once \override Voice.Stem #'stencil = ##f c \once \override Staff.Clef #'full-size-change = ##t \set Staff.forceClef = ##t \set Staff.clefGlyph = #"clefs.F" \set Staff.clefPosition = #2 \set Staff.middleCPosition = #6 %\set Staff.middleCClefPosition = #6 c lef d`Ut 4 \stopStaff \override Staff.StaffSymbol #'line-positions = #'(0 2 4 6 8) \startStaff \once \override Voice.NoteHead #'stencil = ##f \once \override Voice.Stem #'stencil = ##f c \once \override Staff.Clef #'full-size-change = ##t \set Staff.forceClef = ##t \set Staff.clefGlyph = #"clefs.C" \set Staff.clefPosition = #6 \set Staff.middleCPosition = #6 %\set Staff.middleCClefPosition = #6 c lef d`Ut 3 \stopStaff \override Staff.StaffSymbol #'line-positions = #'(2 4 6 8 10) \startStaff \once \override Voice.NoteHead #'stencil = ##f \once \override Voice.Stem #'stencil = ##f c \once \override Staff.Clef #'full-size-change = ##t \set Staff.forceClef = ##t \set Staff.clefGlyph = #"clefs.C" \set Staff.clefPosition = #6 \set Staff.middleCPosition = #6 %\set Staff.middleCClefPosition = #6 c lef d`Ut 2 \stopStaff \override Staff.StaffSymbol #'line-positions = #'(4 6 8 10 12) \startStaff \once \override Voice.NoteHead #'stencil = ##f \once \override Voice.Stem #'stencil = ##f c \once \override Staff.Clef #'full-size-change = ##t \set Staff.forceClef = ##t \set Staff.clefGlyph = #"clefs.C" \set Staff.clefPosition = #6 \set Staff.middleCPosition = #6 %\set Staff.middleCClefPosition = #6 c lef d`Ut 1 \stopStaff \override Staff.StaffSymbol #'line-positions = #'(6 8 10 12 14) \startStaff \once \override Voice.NoteHead #'stencil = ##f \once \override Voice.Stem #'stencil = ##f c \once \override Staff.Clef #'full-size-change = ##t \set Staff.forceClef = ##t \set Staff.clefGlyph = #"clefs.C" \set Staff.clefPosition = #6 \set Staff.middleCPosition = #6 %\set Staff.middleCClefPosition = #6 c lef de Sol \stopStaff \override Staff.StaffSymbol #'line-positions = #'(8 10 12 14 16) \startStaff \once \override Voice.NoteHead #'stencil = ##f \once \override Voice.Stem #'stencil = ##f c \once \override Staff.Clef #'full-size-change = ##t \set Staff.forceClef = ##t \set Staff.clefGlyph = #"clefs.G" \set Staff.clefPosition = #10 \set Staff.middleCPosition = #6 %\set Staff.middleCClefPosition = #6 s \stopStaff \override Staff.StaffSymbol #'line-positions = #'(5.9 6.1 8 10 12 14 16) \startStaff c lef de Sol 1 \stopStaff \override Staff.StaffSymbol #'line-positions = #'(10 12 14 16 18) \startStaff \once \override Voice.NoteHead #'stencil = ##f \once \override Voice.Stem #'stencil = ##f c \once \override Staff.Clef #'full-size-change = ##t \set Staff.forceClef = ##t \set Staff.clefGlyph = #"clefs.G" \set Staff.clefPosition = #10 \set Staff.middleCPosition = #6 %\set Staff.middleCClefPosition = #6 s \stopStaff \override Staff.StaffSymbol #'line-positions = #'(5.9 6.1 7.9 8.1 10 12 14 16 18) \startStaff c } \layout { \context { \Score spacement minimum entre les notes \override SpacingSpanner #'base-shortest-duration = #(ly:make-moment 1 4) } \context { \Staff \remove "Time_signature_engraver" \remove "Bar_engraver"
istance uniforme entre la clef et la note \override Clef #'X-extent = #'(0 . 4) } } \midi {} } </score> La note do dans 8 clefs La clef se trouve nécessairement au début de toute portée, mais peut aussi se rencontrer plus loin pour indiquer un
changement de clef.