Which type of jazz improvisation occurs when the notes of a tune are altered? (music arts)

Melodic improvisation is a type of jazz improvisation occurs when the notes of a tune are altered. Jazz improvisation is the system of spontaneously creating fresh melodies over the continuously repeating cycle of chord changes of a music. The improvised melody happens when musicians use slurs, change notes, and syncopation on the way to recreate the melody in new and exciting approaches.

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