Editing Schenkerian analysis (section)

===Register transfer, coupling<!--[[Register transfer]], [[Obligatory register]], [[Octave transfer]], and [[Coupling (Schenker)]] redirect directly here.-->===
{{anchor|Transfer}}<!-- This section is linked from [[Schenkerian analysis]] -->"Register transfer" is the motion of one or several voices into a different octave (i.e. into a different register). Schenker considers that music normally unfolds in one register, the "obligatory register" (Ger. ''Obligate Lage''), but at times is displaced to higher or lower registers. These are called, respectively, "ascending register transfer" (Ger. ''Höherlegung'') and "descending register transfer" (Ger. ''Tieferlegung'').<ref>{{Cite Grove |last=Drabkin |first=William |title=Register transfer}}</ref> Register transfers are particularly striking in piano music (and that for other keyboard instruments), where contrasts of register (and the distance between the two hands) may have a striking, quasi orchestral effect.<ref>See David Gagné, "The Compositional Use of Register in Three Piano Sonatas by Mozart", ''Trends in Schenkerian Research,'' A. Cadwallader ed., New York, Schirmer, 1990, pp. 23–39.</ref>
"Coupling" is when the transferred parts retain a link with their original register. The work, in this case, appears to unfold in two registers in parallel.