Question

The spontaneous creation or variation on an established theme within an artistic work is known as . A rhythm that emphasizes the off or irregular beats is known as .

Answer 1

The spontaneous creation or variation on an established theme within an artistic work is known as improvisation.

A rhythm that emphasizes the off or irregular beats is known as syncopation.

I hope this helps!

Answer 2

Improvisation and syncopation.

Step-by-step explanation:

Improvisation in music is an act of creating a piece spontaneously or without any practice.

And syncopation in music is the displacement of rhythmical beats which is skipped because of stressing on a weak beat. Syncopation is a technical element of jazz music.

So, the correct answers according to the definition provided are Improvisation and syncopation.