an Entity references as follows:
Diminished tuning is a system of choosing the reeds for a diatonic wind instrument (such as a harmonica or accordion) in which the blow notes repeat a sequence of C E♭ F♯ A and draw notes follow a repeating sequence of D F G♯ B (perhaps shifted to begin with E♭ and F, with F♯ and G♯, or with A and B). For example: