Transposition

Musical objects that are related by transposition have the same interval content and typically the same feeling and function. For example C major triad and D major triad are related by transposition, since moving every note in C major by the same number of semitones (two in this case) results in D major.

On clock diagrams, transposition is represented by rotation, and a black and white diagram represents up to twelve pitch class sets related by transposition.

See also Grouping Clocks.