-\context Staff {
- \property Staff.keySignature = #'(((1 . 2) . 1) ((0 . 3) . -1))
- f8 a c e
- \property Staff.keySignature = #'(((1 . 2) . -1) ((0 . 4) . 2))
- e a, g a
-}
+\new Staff {
+ \set Staff.keySignature = #`(((0 . 3) . ,FLAT) ((1 . 2) . ,SHARP))
+ f8 a c e
+ \set Staff.keySignature = #`(((0 . 4) . ,DOUBLE-SHARP) ((1 . 2) . ,FLAT))
+ e a, g a