Compositions by Marianne Ploger Sanctus Triple Motet for Double (Antiphonal) Choir and Brass (8 parts with double brass ensembles and organ accompaniment), commissioned and premiered by the Chancel Choir of Central Reformed Church, Grand Rapids, Michigan. Requires advanced technique. Sanctus Triple Motet arranged for Three Brass Choirs - commissioned by the Monarch Brass Ensemble, Heather Buchmann, Director, the Monarch Brass Ensemble, Susan Slaughter, principle trumpet. Requires advanced technique Chorale and Fugue For Saxophone Quartet based on the tune "Wie sch_n leuchtet”(How Brightly Shines the Morning Star) , premiered by The University of Michigan Saxophone Quartet (Professor Donald Sinta, soprano saxophone) Requires advanced technique. Berceuse For solo Piano - recorded by the composer on a Keith Hill Viennese Fortepiano after Graf. Requires advanced technique. 22 Variations on an Original Theme For solo Cello - a work, the easier variations can be played by most cellists, the more demanding variations of which require advanced technique. Nocturne For solo Piano - recorded by the composer on an 1835 Josef Worel Viennese Piano. Requires advanced technique. Christmas Carol For SATB Choir. Easy. Writings by Marianne Ploger Pitch Vowels: Frequency Associated Timbre A Discovery of the Acoustical Foundation for: Absolute or Perfect Pitch Perception, Key Color Perception, Equal-Temperament, The A-440 Pitch Standard - Paper describes the Phenomenon in detail.