Igor Stravinsky arguably had more effect on ballet than Tchaikovsky. For Sergei Diaghilev’s Ballets Russes he composed The Firebird, Petrushka, the riot-provoking The Rite of Spring and Les Noces. In the US, he produced Apollo, Agon and Scènes de ballet.
There are other scores, too, and other works by the composer that choreographers have used. But it’s not an exaggeration to say that the galvanising effects of those groundbreaking early scores changed dance for ever.