Changes needed for the melodic and harmonic versions of the scale are written in with accidentals as necessary. The G harmonic minor and melodic minor scales are:
G minor has been considered the key through which Wolfgang Amadeus Mozart best expressed sadness and tragedy,[1] and many of his minor key works are in G minor, such as Piano Quartet No. 1 and String Quintet No. 4. Though Mozart touched on various minor keys in his symphonies, G minor is the only minor key he used as a main key for his numbered symphonies (No. 25, and the famous No. 40). In the Classical period, symphonies in G minor almost always used four horns, two in G and two in B♭ alto.[2] Another convention of G minor symphonies observed in Mozart's No. 25 and Mozart's No. 40 was the choice of E-flat major, the subdominant of the relative major B♭, for the slow movement, with other examples including Joseph Haydn's No. 39 and Johann Baptist Wanhal's G minor symphony from before 1771.[3]
^Hellmut Federhofer, foreword to the BärenreiterUrtext edition of Mozart's Piano Quartet in G minor. "G-Moll war für Mozart zeitlebens die Schicksaltonart, die ihm für den Ausdruck des Schmerzes und der Tragik am geeignetsten erschien." ("G minor was, for Mozart, the most suitable fate-key throughout his life for the expression of pain and tragedy.")
^H. C. Robbins Landon, Mozart and Vienna. New York: Schirmer Books (1991): 48. "Writing for four horns was a regular part of the Sturm und Drang G minor equipment." Robbins Landon also notes that Mozart's No. 40 was first intended to have four horns.
^James Hepokoski and Warren Darcy, Elements of Sonata Theory (Oxford University Press: 2006) p. 328
