D-flat minor D-flat minor D minor is a theoretical key based on D, consisting of the pitches D, E, F, G, A, B, and C. Its key signature has six flats and one double flat. Its relative major is F major (usually replaced by E major), its parallel major is D major, its direct enharmonic equivalent is C♯ minor, which is normally used. The D natural minor scale is: \override Score.TimeSignature #'stencil = ##f \relative c' { </score> Changes needed for the melodic and harmonic versions of the scale are written in with accidentals as necessary. The D harmonic minor and melodic
Music of Mesopotamia same key signature as a C-major scale. The F-Major scale has a B-flat in the key signature, however with the raised fourth in the lydian scale, the B-flat becomes a B-natural. The drawback in modern music with the lydian scale is the use of what's known today as the "devil's tritone," however, the Mesopotamians don't seem to have a term for this interval, nor a term for the octave which we know they had a concept of. The use of a heptatonic scale would have eliminated any practical need for a term for the octave, as it wouldn't have the