Minor scale based on the accidentals of the "natural" minor scale, not on those of the harmonic or melodic minor scales. For example, a piece in E minor will have one sharp in its key signature because the E natural minor scale has one sharp (F). Major and minor keys that share the same key signature are "relative" to each other. For instance, F major is the relative major of D minor since both have key signatures with one flat. Since the natural minor scale is built on the 6th degree of the major scale, the tonic of the relative minor is
Pentatonic scale F, G, B-flat. The A minor pentatonic, the relative minor of C, comprises the same tones as the C major pentatonic, starting on A, giving A, C, D, E, G. This minor pentatonic contains all three tones of an A minor triad. \override Score.TimeSignature #'stencil = ##f \relative c" { </score> The five pentatonic scales found by running up the black keys on the piano are: Ricker assigned the major pentatonic scale mode I while Gilchrist assigned it mode III. Ben Johnston gives the following Pythagorean tuning for the minor pentatonic scale: Naturals in that table are not the alphabetic