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In music theory, contrapuntal motion is the general movement of two or more melodic lines with respect to each other. [1] In traditional four-part harmony, it is important that lines maintain their independence, an effect which can be achieved by the judicious use of the four types of contrapuntal motion: parallel motion, similar motion, contrary motion, and oblique motion.
An interval is inverted by raising or lowering either of the notes by one or more octaves so that the higher note becomes the lower note and vice versa. For example, the inversion of an interval consisting of a C with an E above it (the third measure below) is an E with a C above it – to work this out, the C may be moved up, the E may be lowered, or both may be moved.
There are many examples of song melodies that are harmonically interdependent yet independent in rhythm and melodic contour. For example, "Frère Jacques" and "Three Blind Mice" combine euphoniously when sung together. A number of popular songs that share the same chord progression can also be sung together as
In a mirror canon (or canon by contrary motion), the subsequent voice imitates the initial voice in inversion. They are not very common, though examples of mirror canons can be found in the works of Bach, Mozart (e.g., the trio from Serenade for Wind Octet in C minor , K. 388/384a), Anton Webern , and other composers.
A modern perspective on voice leading in mm. 3–7 of J. S. Bach's Little Prelude in E minor, BWV 941. From the last chord of each measure to the first chord of the next, all melodic movements (excepting those in the bass) are conjunct; inside each measure, however, octave shifts account for a more complex parsimonious voice leading. [23]
In these chords, tones that might normally be considered nonchord tones are viewed as chord tones, such as the seventh of a minor seventh chord. For example, in 1940s-era bebop jazz, an F ♯ played with a C 7 chord would be considered a chord tone if the chord were analyzed as C 7(♯ 11).
The Rip Chords were an early-1960s American vocal group, originally known as the Opposites, composed of Ernie Bringas and Phil Stewart. [1] The group eventually expanded into four primary voices, adding Columbia producer Terry Melcher and co-producer Bruce Johnston (best known as a member of the Beach Boys ).
According to Riemann the chord is derived through Leittonwechselklänge (German, literally: "leading-tone changing sounds"), sometimes called gegenklang or "contrast chord", abbreviated Tl in major and tL in minor, [6] or, in German literature, abbreviated Tg in major and tG in minor (standing for "Gegenklang" or "Gegenparallel") [citation needed].