New styles that the composer pioneered
The composer is Igor Stravinsky

Igor Fyodorovich Stravinsky ComSE was a Russian-born composer, pianist, and conductor. He is widely considered one of the most important and influential composers of the 20th century.

Explanation:

Stravinsky's output is typically divided into three general style periods: a Russian period, a neoclassical period, and a serial period.  

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