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The arrangement of the pitches in a piece of twelve tone music is called

In a paragraph of no less than 125 words, explain the single most important factor involved in advancing american classical music in the twentieth century.

This example of early christian art contains christian symbolism that was unrecognizable by pagans. what is the title of this example of art? a. the rabbula gospelsb. sarcophagus of the church of santa maria antiquac. the sarcophagus of the good shepherdd. the baptism of the disciples