Which composer or composers created a new genre?

Sometimes meters contain groups of beats. a meter of 5/8 may have groups of 3 + 2 or 2 + 3. a. true b. false

What convetion did chardin and delacroix use in the painting grace before meal and liberty leading the people to give the artworks a sense of harmony and stability?

The adoption of allowed classical music to have much more effective dynamic ranges.