Igor Fyodorovich Stravinsky, born in 1882, was a Russian composer, pianist and conductor. Considered to be one of the most influential composers of the 20th century, Stravinsky's music is stylistically diverse, spanning many musical periods in the 20th century. Some of his most notable works from his Russian period (1907-1919) include The Rite of Spring, Firebird, Petrushka, and Pulcinella among many others. Later works from his Neoclassical period (1920-1954) include the use of traditional musical forms including, concerto grossos, symphonies and fugues paying tribute to earlier composers such as J.S. Bach and Tchaikovsky. Starting in the 1950's Stravinsky began to adopt a serialist approach to composing. Incorporating the use of tone rows and dodecaphony (a twelve tone technique developed by Stravinsky) in his works. Although this changed his music dramitically, Stravinsky managed to keep his own distinctive sound that was present in his earlier periods.