Mozart's Requiem is “one of the most performed and studied pieces of music in history” (Stango, n.d.). The story behind the beginning of this piece begins with Count Franz von Walsegg, who commissioned a requiem mass for his wife Anna (who had died). Throughout his work on this piece, Mozart began to feel so emotionally involved with the piece that he believed he was writing a funeral mass for himself. Mozart died on 5 December 1791, with only half of the Requiem finished (through Lacrimosa). Franz Xaver Süssmayr finished the Requiem based on Mozart's directions from the notes and what he had already written. The completed work is dated 1792 by Süssmayr and was first performed on 2 January 1793. Mozart's intent for this mass was specifically for church ceremony, but recently the Requiem has been used and performed in concerts to show the musical genius of Mozart ( Stango, n.d.). And Mozart was truly a musical genius! As I analyzed this piece, I was continually struck by its adherence to the rules of major vocal direction and counterpoint. The moments when Mozart broke away from the standards were masterfully executed, engaging the ear, and he was always able to bring us back home. In this article I will share with you what I have learned about Mozart's Requiem, Domine Jesu, measures 1 to 43. I will start with the big picture and boil it down to the smallest details. The parts of this piece written by Mozart are the Soprano, Alto, Tenor, Bass and Cello/Organ parts. Sussmayr wrote the Basseto Horns, Bassoons, Trombone (alto, tenor and bass), Violin 1 and 2 and Viola. The part of this piece given to me is written in the key of B flat major and G minor, however it modulates to C minor at bar 9, A major at bar...... middle of the paper...... his project is now a precious source of knowledge to draw on when the time comes. Works Cited: Stango, C. (n.d.). A study of Wolfgang Amadeus Mozart, his Requiem and his influence on conducting. Retrieved from https://www.misericordia.edu/honorus/CStangoPaper.cfmKemme, C. (2009). The Domine Jesu of Mozart's Requiem: theory and practice of its completion. Dutch Journal of Music Theory, volume 14 (number 2). Retrieved from http://upers.kuleuven.be/sites/upers.kuleuven.be/files/page/files/2009_2_1.pdf Full text of the text of Mozart's Requiem. (n.d.). Retrieved from http://www.good-music-guide.com/reviews/055lyrics.htmNeapolitan Chord. (n.d.). Retrieved from http://gilschool.wordpress.com/advanced-thoery/neapolitan-chord/Flandreau, T. (2010). Music Theory Teacher - The Neapolitan Chord. Retrieved from http://www.musictheoryteacher.com/pb/wp_b4f39ca6/wp_b4f39ca6.html