= #'((("accidentals.flat" . "accidentals.sharp.slashslash.stemstemstem") . 0.5))
\set Staff.keySignature = #`((4 . ,FLAT) (6 . ,THREE-Q-SHARP) (2 . ,SEMI-FLAT))
e2
= #'((("accidentals.flat" . "accidentals.sharp.slashslash.stemstemstem") . 0.5))
\set Staff.keySignature = #`((4 . ,FLAT) (6 . ,THREE-Q-SHARP) (2 . ,SEMI-FLAT))
e2