Who was the first to "discover" twelve-tone music?

How is the melody of the Sioux Grass Dance treated (“decorated” or “ornamented”)?

What will be an ideal response?

In addition to its duties in blocking censorship efforts by reform groups and state governments, the Hays Office also:

A. battled efforts by European nations to limit American exports. B. pressured Hollywood's guilds to admit foreign-born members. C. published studies on the effects of movie watching on children. D. established the Academy Awards in 1927.