Enumeration Value public enum Value Representation of value of a note in a music context. Enumeration Cases sixtyfourth case sixtyfourth A sixty-fourth note. thirtysecond case thirtysecond A thirty-second note. sixteenth case sixteenth A sixteenth note. eighth case eighth An eighth note. quarter case quarter A quarter note. half case half A half note. whole case whole A whole note. double case double A double whole note. long case long A long. Properties beats public var beats: Double Beats correspondence of the value. Operators + public static func + (_ lhs: Self, _ rhs: Self) -> Self? Adding two values.