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Common chords are frequently used in modulations, in a type of modulation known as common chord modulation or diatonic pivot chord modulation. It moves from the original key to the destination key (usually a closely related key) by way of a chord both keys share. For example, G major and D major have 4 chords in common: G, Bm, D, Em.
Using lead sheet chord names, these chords could be referred to as A minor, D minor, G major and C major. [ 1 ] In music theory , Roman numeral analysis is a type of harmonic analysis in which chords are represented by Roman numerals , which encode the chord's degree and harmonic function within a given musical key .
The key is also appropriate for guitar music, with drop D tuning making two D's available as open strings. For some beginning wind instrument students, however, D major is not a very suitable key, since it transposes to E major on B ♭ wind instruments, and beginning methods generally tend to avoid keys with more than three sharps.
The suspended fourth chord is often played inadvertently, or as an adornment, by barring an additional string from a power chord shape (e.g., E5 chord, playing the second fret of the G string with the same finger barring strings A and D); making it an easy and common extension in the context of power chords.
In the key of C major, these would be: D minor, E minor, F major, G major, A minor, and C minor. Despite being three sharps or flats away from the original key in the circle of fifths, parallel keys are also considered as closely related keys as the tonal center is the same, and this makes this key have an affinity with the original key.
A typical sequence of a jazz or rock song in the key of C major might indicate a chord progression such as C – Am – Dm – G 7. This chord progression instructs the performer to play, in sequence, a C major triad, an A minor chord, a D minor chord, and a G dominant seventh chord.
The book has since been published in a case-size edition by William Bay, Mel's son and has spawned a series of similar books like the Encyclopedia of Guitar Chord Progressions (first published in 1977 [3]), Encyclopedia of Guitar Chord Inversions, Mel Bay's Deluxe Guitar Scale Book, Encyclopedia of Jazz Guitar Runs, Fills, Licks & Lines, and ...
By thinking of this blues progression in Roman numerals, a backup band or rhythm section could be instructed by a bandleader to play the chord progression in any key. For example, if the bandleader asked the band to play this chord progression in the key of B ♭ major, the chords would be B ♭-B ♭-B ♭-B ♭, E ♭-E ♭-B ♭-B ♭, F-E ...