 The best @-@ known ballet version is Prokofiev 's Romeo and Juliet . Originally commissioned by the Kirov Ballet , it was rejected by them when Prokofiev attempted a happy ending , and was rejected again for the experimental nature of its music . It has subsequently attained an " immense " reputation , and has been choreographed by John Cranko ( 1962 ) and Kenneth MacMillan ( 1965 ) among others . 
