Copland began writing songs at the age of eight and a half. His earliest notated music, about seven bars he wrote when age 11, was for an opera scenario he created and called "Zenatello". From 1913 to 1917 he took piano lessons with Leopold Wolfsohn, who taught him the standard classical fare. Copland's first public music performance was at a Wanamaker's recital. By the age of 15, after attending a concert by Polish composer-pianist Ignacy Jan Paderewski, Copland decided to become a composer. After attempts to further his music study from a correspondence course, Copland took formal lessons in harmony, theory, and composition from Rubin Goldmark, a noted teacher and composer of American music (who had given George Gershwin three lessons). Goldmark, with whom Copland studied between 1917 and 1921, gave the young Copland a solid foundation, especially in the Germanic tradition. As Copland stated later: "This was a stroke of luck for me. I was spared the floundering that so many musicians have suffered through incompetent teaching." But Copland also commented that the maestro had "little sympathy for the advanced musical idioms of the day" and his "approved" composers ended with Richard Strauss.