Romeo and Juliet sometimes been judged unfavourably because of its perceived liberties with Shakespeare; however, Bellini and his librettist, Felice Romani, worked from Italian sources—principally Romani's libretto for "Giulietta e Romeo" by Nicola Vaccai—rather than directly adapting Shakespeare's play. Among later operas, there is Heinrich Sutermeister's 1940 work "Romeo und Julia". "Roméo et Juliette" by Berlioz is a "symphonie dramatique", a large-scale work in three parts for mixed voices, chorus, and orchestra, which premiered in 1839. Tchaikovsky's "Romeo and Juliet" Fantasy-Overture (1869, revised 1870 and 1880) is a 15-minute symphonic poem, containing the famous melody known as the "love theme". Tchaikovsky's device of
Romeo + Juliet to the mansion, hiding under Juliet's balcony. Juliet emerges into the courtyard and proclaims her love for Romeo before he sneaks up behind her. Juliet warns him that he is risking his life, but Romeo tells her he doesn't care whether he is caught. Knowing her nurse is looking for her, Juliet tells him that, if he sends word by the following day, they will be betrothed. The next day, Romeo visits Father Laurence, telling him he wants to marry Juliet. He agrees to marry the pair in hopes that their marriage will end the violence between the families. Romeo