RomÃ o et Juliette is a French opera in five acts by Charles Gounod , first performed in Paris , on April 27 , 1867 , libretto by Jules Barbier et Michel CarrÃ , after Shakespeare 's Romeo and Juliet . RomÃ o et Juliette ( Romeo and Juliet ) is an opÃ ra in five acts by Charles Gounod to a French libretto by Jules Barbier and Michel CarrÃ , based on The Tragedy of Romeo and Juliet by William Shakespeare .