A Conductor’s Analysis of Four Eighteenth-Century Compositions: Franz Joseph Haydn’s Symphony no. 2 in C; Wolfgang Amadeus Mozart’s Piano Concerto in D minor, K. 466 (First Movement: Allegro); Carl Heinrich Graun’s “Nun klingen Waffen” and “Ihr weichgeschaffnen Seelen” from Der Tod Jesu; and Four Choruses from Carl Philipp Emanuel Bach’s The Resurrection and Ascension of Jesus