Meaning of Disjunct in Music
In music, the term "disjunct" refers to a type of melodic motion where the melody moves by leap, meaning it proceeds by intervals larger than a second. This is in contrast to "conjunct" motion, where the melody moves by step, proceeding from one scale degree to the next by intervals of a second.
While conjunct motion produces a smooth vocal line and is considered more natural and comfortable to sing, disjunct motion is more difficult to sing but can give a melody character and make it more memorable. Many melodies are a mixture of both conjunct and disjunct motion, with the intervallic leaps providing interest and variety to the melodic line.
To illustrate the concept of disjunct motion, consider Beethoven's "Ode to Joy" from Symphony No. 9. The melody in this piece rises and falls slowly, creating a conjunct melody. On the other hand, Astor Piazzolla's "Spring Tango" for violin, cello, and piano features a disjunct melody with large leaps.
In summary, disjunct motion in music refers to melodic motion that proceeds by leap, using intervals larger than a second, while conjunct motion refers to melodic motion that proceeds by step, using intervals of a second.
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