Nana may refer to:
Nana (1926) is Jean Renoir's second full-length silent film and is based on the novel by Émile Zola.
A government official, Count Muffat, falls under the spell of Nana, a young actress. She becomes his mistress, living in the sumptuous apartment which he provides for her. Instead of elevating herself to Muffat's level, however, Nana drags the poor man down to hers - in the end, both lives have been utterly destroyed.
The film stars Renoir’s wife, Catherine Hessling, in an eccentric performance as the flawed heroine Nana.
Jean Renoir’s film is a fairly faithful adaptation of Émile Zola’s classic novel. The film’s extravagances include two magnificent set pieces – a horse race and an open air ball. The film never made a profit, and the commercial failure of the film robbed Renoir of the opportunity to make such an ambitious film again for several years.
Phthora nana (Medieval Greek φθορά νανὰ) is one of the ten modes of the Hagiopolitan Octoechos consisting of 8 diatonic echoi and two additional phthorai. It is used in different traditions of Orthodox chant until today (→ Neobyzantine Octoechos). The name "nana" is taken from the syllables (written in ligatures "ʅʅ") sung during the intonation which precedes a melody composed in this mode. The name "phthora" derived from the verb φθείρω and means "destroy" or "corrupt". It was usually referred to the diatonic genus of the eight mode system and as a sign used in Byzantine chant notation it indicated a "change to another genus" (μεταβολὴ κατὰ γένος), in the particular case of phthora nana a change to the enharmonic genus. Today the "nana" intonation has become the standard name of the third authentic mode which is called "echos tritos" (ἦχος τρίτος) in Greek and "third glas" (третий Гласъ) in Old Church Slavonic.
In the theory and notation of Byzantine and Orthodox chant nana is the name of a special phthora which had been used in different ways according to its historic context: