The country whose folk music contains a great deal of dissonant harmony. the austrian composer who wrote over 600 art songs. the roman numeral representing the chord that occurs during the fifth bar (measure) of a twelve-bar blues chord progression.

The nation whose folk melody includes dissonant harmony is America, The Austrian musician with over 600 songs is Schubert, and the Roman number describing the music is IV.

Explanation:

In American music, dissonance is the variety of sounds that appear fissionable and has an aural want to settle to a constant consonance. Both consonance and dissonance are terms used to tune, chords, and pauses and, by delay, to music, tonality, and even beat and meter.

The country whose folk music contains dissonant harmony is America, The Austrian composer with over 600 songs is Schubert, and the roman numeral representing the chord is IV