For 10 points, identify this Czech composer of the New World  Symphony.
This composer wrote 10 pieces for piano four hands called The Legends, and earlier he wrote a  cycle of 23 pieces for two voices with piano titled Moravian Duets. He wrote a "Nature, Life and  Love" trilogy of overtures that includes In Nature's Realm, Carnival, and Othello, and he composed the String Quartet No. 12, nicknamed American, after his time spent in Iowa. His opus  46 and 72 combine to form a series of 16 Slavonic Dances, and his most famous symphony was  once mistaken to be his 5th. For 10 points, identify this Czech composer of the New World  Symphony.
This composer wrote 10 pieces for piano four hands called The Legends, and earlier he wrote a  cycle of 23 pieces for two voices with piano titled Moravian Duets.
Antonin (Leopold) Dvorak