> { \transpose ds c \melody } % "ds" because "ef" yields a weird key
Thomas already posted the correct transposition, but just to emphasize: If I understand what you want to do, the arguments of \transpose must be inverted. You want to transpose from c to e flat: \transpose c ef \melody The order in your snippet transposes from d sharp to c, i.e. a melody in \key c \major is transposed to b double flat or a major. Joram _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user