Type alias DiamondMosAlphabet

DiamondMosAlphabet: "J" | "K" | "L" | "M" | "N" | "O" | "P" | "Q" | "R" | "S" | "T" | "U" | "V" | "W" | "X" | "Y" | "Z"

Valid nominals for absolute pitches in Diamond mos notation.