SEQUENCE is generally taken to mean the repetition of a definite group of notes or chords in different positions of the scale, like regular steps ascending or descending, as in the following outlines:—
The device has been a favourite one with composers, from Corelli, Bach, and Handel, to Schumann, Brahms, and Wagner. The reason is partly that it is so thoroughly intelligible without being commonplace. The mind is easily led from point to point by recognising each successive step after...