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A tetrad is a set of four notes in music theory. When these four notes form a tertian chord they are more specifically called a seventh chord , after the diatonic interval from the root of the chord to its fourth note (in root position close voicing).
In music theory, a tetrachord (Greek: τετράχορδoν; Latin: tetrachordum) is a series of four notes separated by three intervals.In traditional music theory, a tetrachord always spanned the interval of a perfect fourth, a 4:3 frequency proportion (approx. 498 cents)—but in modern use it means any four-note segment of a scale or tone row, not necessarily related to a particular tuning ...
List of musical chords Name Chord on C Sound # of p.c.-Forte # p.c. #s Quality Augmented chord: Play ...
These notes form a tetrad with several enharmonic equivalents: C–E ♭ –G–A might be written as Cm 6, F 9, F 9 (no root), Am 7 ♭ 5, B 7 ♭ 9, A ♭ Maj7 ♭ 9, or B alt. Many jazz chord charts use these chord notations indiscriminately, particularly in the choice of minor sixth versus dominant ninth chords.
In this case, the chord is viewed as a C major seventh chord (CM 7) in which the third note is an augmented fifth from root (G ♯), rather than a perfect fifth from root (G). All chord names and symbols including altered fifths, i.e., augmented (♯ 5, +5, aug5) or diminished (♭ 5, o 5, dim5) fifths can be interpreted in a similar way.
This happens because Wayne's tetrad chord shapes are contained within the 2-1-2-1-2 fingerings. Again the goal is to play melodic lines that sound the best on the instrument. Wayne taught many other arpeggio fingerings beginning with close chord form: 1-1-1-1 for one octave.
A unique particularity of the minor chord is that this is the only chord of three notes in which the three notes have one harmonic – hearable and with a not too high row – in common (more or less exactly, depending on the tuning system used). This harmonic, common to the three notes, is situated 2 octaves above the high note of the chord.
Minor major seventh chord. A minor major seventh chord, or minor/major seventh chord (also known as the Hitchcock Chord) is a seventh chord composed of a root, minor third, perfect fifth, and major seventh (1, ♭ 3, 5, and 7). It can be viewed as a minor triad with an additional major seventh.