Register is often understood in relation to other elements of music, sometimes called parameters.
The register in which an instrument plays, or in which a part is written, affects the quality of sound, or its timbre.
This technique is often associated with or attributed to Anton Webern, and it later appears in the music of Arthur Berger, Pierre Boulez, Elliott Carter, and Karlheinz Stockhausen.
To delineate these registers, pathologists specify vibratory pattern of the vocal folds, sequential pitches, and type of sound.
[3] In the context of wind instruments, the word register usually distinguishes pitch ranges produced using different normal modes of the air column, with higher registers produced by overblowing.