All of the following characteristics are closely associated with Buxtehude's Praeludium EXCEPT?

The twelve-tone, atonal music of Schoenberg is often difficult to understand. Which of the following statements is NOT correct?

A) Retrogrades are difficult to recognize as part of an original row. B) It has no form or logic. C) It often has fragmented melodies. D) Much of its harmony is dissonant.

Even though this composition uses plainchant as a point of departure, the composer?

a) remained faithful to the original plainchant voice b) replaced that plainchant with an entirely newly composed part c) used its in augmented note values in the uppermost part d) manipulated it in various ways