Early on, Bernstein often conducted operas (Cherubini, Bellini) and other sung stage works (Blitzstein, Weill). He would later make renowned opera recordings in New York and Vienna. His greatest contributions to the genre are three quite varied compositions. The short, all-sung Trouble in Tahiti (1952) is bitingly satirical. Candide (1956) is an operetta, with plentiful spoken dialogue. The words were provided by a half-dozen collaborators, partly for later productions (each production included a somewhat different selection of musical numbers). The entirely serious A Quiet Place (1983−86) deals with family tensions and disappointments. Its style is highly eclectic, ranging from blues to twelve-tone. A Quiet Place has one official version (in which Trouble in Tahiti becomes two interludes in Act 2) and one in which the orchestration has been reduced by Garth Edwin Sunderland. The latter omits Tahiti but restores important passages that the official version omits.

Bernstein loved to conduct works (e.g., by Liszt, Mahler, Ravel) inspired by dance rhythms and folk songs of various lands and peoples. His own compositions, similarly, often invoke distant places and their musics. Fancy Free and West Side Story include such Latin American dance-types as danzón, mambo, and cha-cha-chá. The soprano in Trouble in Tahiti sings about a film full of stereotypical Pacific-island ‘natives’. Other references to various Elsewheres occur in Songfest (a rhythmically adventurous Latin American sound for ‘A Julia Burgos’; Middle Eastern stylistic allusions in ‘Zizi’s Lament’), On the Town (the Congacabana nightclub scene; the humorously klezmer-ish, rather than Arab-sounding, call of Rajah Bimmy), Wonderful Town (‘Conga!’), and two works inspired by visits to Palestine/Israel: ‘Silhouette (Galilee)’, based on a well-known Arab song (including some Arabic words); and Four Sabras, no. 2, for piano (‘Idele, the Chasidele’), which abounds in typically East European Jewish musical traits.