👉 In music notation, a chromule is a musical symbol that represents a note on a string or a key that moves up by one semitone. It's often used to indicate that the next note should be played at a higher pitch than the current note. For example, in the melody "C major, C minor, D major" (or any other chord progression), the chromule between the 3rd and 5th notes would represent the key C major.
