Who was interested in color theory and painted Red Roofs, which the author describes as a "random patchwork of red and green, orange and blue [that] appears through a veil of tree branches that interrupt the viewer's vision"?

Which of the following best describes Ockeghem's Missa cuiusvis toni?

a) it is performable in any of four different modes b) it is performable only in the mode in which it is notated c) it is performable in any of three different modes d) it is performable in all of the available Renaissance modes

The musical form

A. is cyclic A B C A D E A. B. is ternary A B A. C. contains a series of similar sounding sections. D. contains contrasting, episodic sections.