Organ Registration in Theory and Practice

accompaniment addition alto aural Bach Bach's balance bass beginning Bibl blend Bourdon cantus firmus century characteristics Choir chorale chords clarity cohesion color combination complete composer composer's composition contrast couplers crescendo crescendo pedal Cromorne diapason differentiation dynamic effect elements English Horn ensemble example Fantasia Flor Peeters flue flute foundation stops four-foot flute Franck's frequencies fugue fundamental pitch gedeckt Gemshorn Grand Orgue harmonic heard high pitches included instruments intensity interpretation keyboard listener loudness material measure melody mixtures mood movement mutations notes Oboe octave orchestral organ music organist pedal point phrase pipes pistons pitch impression plainsong played polyphonic Positif preludes produced prominent proportion Quintadena range reeds registration Rohrflöte separate audibility single sixteen-foot stops sixteen-foot tone solo stop Sonata soprano sound specifications string suggested swell pedal tenor texture theme Tierce timbre tion Toccata tonal tone quality two-foot upper partials upper pitches variation vibrations Voix Céleste wave Widor's