When Sergei Prokofiev's First Piano Concerto premiered in 1918 in New York, one critic called it "a duel, a battle to the death between the pianist and the piano." He said the piano could be heard "shrieking, groaning, howling, and fighting back." Funny how what's outrageous to listeners in one century is embraced by another. The concerto now gets a warm reception from audiences. We'll hear Bulgarian pianist Plamena Mangova performing it in Madrid, Spain.