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The chord-scale system may be compared with other common methods of improvisation, first, the older traditional chord tone/chord arpeggio method, and where one scale on one root note is used throughout all chords in a progression (for example the blues scale on A for all chords of the blues progression: A 7 E 7 D 7).
An arpeggio (Italian: [arˈpeddʒo]) is a type of broken chord in which the notes that compose a chord are individually sounded in a progressive rising or descending order. Arpeggios on keyboard instruments may be called rolled chords .
These include, in addition to the "simple" scales of the first tutorial: forms derived from scales (chords incorporated into scales); chromatic "sliding-finger" (or "sixth-finger") technique; repeated notes; arpeggios and broken chords; examples of "three-hands"; trills; examples with arpeggios; and further examples of "three hands."
Arpeggios teach how to play broken chords over larger intervals. Many of these components of music are found in difficult compositions, for example, a large tuple chromatic scale is a very common element to Classical and Romantic era compositions as part of the end of a phrase. Articulations from legato to staccatissimo.
For example, triads and sevenths teach how to play chords with accuracy and speed. Scales teach how to move quickly and gracefully from one note to another (usually by step). Arpeggios teach how to play broken chords over larger intervals. Many of these components of music are found in compositions, for example, a scale is a very common element ...
arpeggio, arpeggiato played like a harp (i.e. the notes of the chords are to be played quickly one after another instead of simultaneously); in music for piano, this is sometimes a solution in playing a wide-ranging chord whose notes cannot be played otherwise; arpeggios are frequently used as an accompaniment; see also broken chord articulato
Thus for a several bar section in C7, a performer playing "inside" will use a C7 arpeggio and the C mixolydian scale. A performer playing "outside" will use arpeggios and scales that are harmonically distant and thus more dissonant-sounding, such as a D ♭ arpeggio and a D ♭ major scale. Playing "inside" is more relaxed-sounding.
A chromatic scale exercise from Arban's Method. Arban's series on scales includes studies of major, minor, and chromatic scales, as well as numerous variations thereof. Arban admits to giving minor scales "limited treatment," but Gordon refutes this by citing the nonexistence of "limits on the use of the Trumpet and Cornet." [3]: 57