"Manhã de Carnaval"
(trad. En: "Morning of Carnival"), is the title of the most popular song by Brazilian composers Luiz Bonfá and Antonio Maria. It appeared in the 1959 Portuguese-language film Orfeu Negro (English titled: Black Orpheus), by French director Marcel Camus and based on a play by Vinícius de Moraes. Particularly in the USA, the song is considered to be one of the most important Brazilian Jazz/Bossa songs that helped establish the Bossa Nova movement in the late 1950s. Manhã de Carnaval has become a jazz standard in the USA, while it is still performed regularly by a wide variety of musicians around the world in its vocalized version or just as an instrumental one.

The song is also known in the USA by the English text version titled: "A Day in the Life of a Fool," or simply as "Carnival" and in Spanish text by the name of "Mañana de Carnaval". All versions of foreign texts were written by different people using Bonfá's original music. In France the song is also known as "La Chanson D'Orphée" ("Orpheus' song").
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