What did Marcel Duchamp contribute to the Dada movement?
a. He held meetings for artists who had a shared disgust for the current culture,
b. He produced many ready-mades, or common objects that are transformed into art.
C. He produced many phoſpmontages.
d. all of the above

Nstrumental music that supports the main part(s) chamber music 2. a large group of instruments usually including woodwinds, brass, and percussion band 3. music written for small ensembles for an intimate setting accompaniment 4. a person who leads an ensemble conductor 5. an electronic keyboard capable of multiple instrument sounds