Berlin Dada artists created a variation on collage called _____

Which of the following is a musical composition for an unaccompanied keyboard or other instrument with only keyboard accompaniment?

A. quartet B. sonata C. concerto D. symphony

A costume designer's thumbnail sketches

A. help the designer communicate with the director. B. give an idea about how actors will look together on stage. C. usually become the basis for the final sketches. D. all of the above.