From Wiktionary, the free dictionary
пе́сни • (pésni) f inan or f inan pl
- inflection of пе́сня (pésnja):
- nominative/accusative plural
- genitive singular
пе́сни • (pésni) f inan or f inan pl
- inflection of песнь (pesnʹ):
- genitive/dative/prepositional singular
- nominative/accusative plural