Export always the full lilypond key sig scheme. This is required for ly transposition

engine/api.py

@@ -1907,7 +1907,6 @@ def insertCommonKeySignature(root:int, scheme:str):
         "Mixolydian": [0,0,0,0,0,0,-10],
         "Locrian": [0,-10,-10,0,-10,-10,-10],
         "Hollywood": [0,0,0,0,0,-10,-10], #The "Hollywood"-Scale. Stargate, Lord of the Rings etc.
-        #TODO: MOAR!
         }
 
     #Lilypond knows some standard key signature modes, which produce cleaner output than our default verbose note-for-note one.
@@ -1915,7 +1914,7 @@ def insertCommonKeySignature(root:int, scheme:str):
 
     if scheme.lower() in lySupported:
         lyRootNote = pitchmath.pitch2ly[root].strip("'").strip(",").lower()
-        lyovrd = f"\\key {lyRootNote} \\{scheme.lower()}"
+        lyovrd = f"\n\\key {lyRootNote} \\{scheme.lower()}\n"
     else:
         lyovrd = None
 

engine/items.py

@@ -2276,18 +2276,26 @@ class KeySignature(Item):
             elif alteration == -20:
                 return "(" + str(step) + " . ," + "DOUBLE-FLAT)"
             elif self.lilypondParameters["explicit"] and alteration == 0:
-                return "(" + str(step) + " . ," + "NATURAL)"
+                return "(" + str(step) + " . ," + "NATURAL)" #explicit is a legacy flag. It is not available to the user. We now (v2.2.0) always export everything explictely to get ly-transposition working
             else:
-                return ""
+                return "(" + str(step) + " . ," + "NATURAL)"
 
         #G Major ((3, 10), (0, 0), (4, 0), (1, 0), (5, 0), (2, 0), (6, 0))
         #`((0 . ,NATURAL) (1 . ,NATURAL) (2 . ,NATURAL) (3 . ,SHARP) (4 . ,NATURAL) (5 . ,NATURAL) (6 . ,NATURAL))
         schemepairs = " ".join(build(x[0], x[1]) for x in self.keysigList)
         schemepairs = " ".join(schemepairs.split()) # split and join again to reduce all whitespaces to single ones.
-        subtextRoot = "\\once \\override Staff.KeySignature #'stencil = #(lambda (grob) (ly:stencil-combine-at-edge (ly:key-signature-interface::print grob) Y DOWN (grob-interpret-markup grob (markup #:small \"" + pitchmath.pitch2ly[self.root].strip(",").title() + "\")) 3)) " #3 is the space between keysig and text
-        lyKeysignature = subtextRoot + "\\set Staff.keyAlterations = #`( {} )".format(schemepairs)
+        assert schemepairs
+        #For Transposition in lilypond we need to explicitly export all scheme pairs, not only the one that differ from major.
+
+        #subtextRoot = "\\once \\override Staff.KeySignature #'stencil = #(lambda (grob) (ly:stencil-combine-at-edge (ly:key-signature-interface::print grob) Y DOWN (grob-interpret-markup grob (markup #:small \"" + pitchmath.pitch2ly[self.root].strip(",").title() + "\")) 3)) " #3 is the space between keysig and text
+        #lyKeysignature = subtextRoot + "\\set Staff.keyAlterations = #`( {} )".format(schemepairs)
+
+        lyKeysignature = f"\n\\key {pitchmath.pitch2ly[self.root].strip(',')}  #`( {schemepairs} )\n"
         return lyKeysignature
 
+
+        #!!!!THIS IS DEAD CODE!!
+
         #Alternative
         schemepairs = " ".join(build(num, alt) for num, alt in enumerate(self.deviationFromMajorScale))
         schemepairs = " ".join(schemepairs.split()) # split and join again to reduce all whitespaces to single ones.

engine/track.py

@@ -865,8 +865,7 @@ class Track(object):
                 keySignature = ""
                 break
         else:
-            keySignature = self.initialKeySignature.lilypond(carryLilypondRanges) + "\n"
-
+            keySignature = self.initialKeySignature.lilypond(carryLilypondRanges)
 
         upbeatLy = "\\partial {} ".format(Duration.createByGuessing(self.upbeatInTicks).lilypond(carryLilypondRanges)) if self.upbeatInTicks else ""