Premise: Alexander Aleksandrovich Alyabyev (Russian: Алекса́ндр Алекса́ндрович Аля́бьев ; 15 August [O.S. 4 August] 1787 6 March [O.S. 22 February] 1851 ), also rendered as Alabiev or Alabieff, was a Russian composer known as one of the fathers of the Russian art song. He wrote seven operas, twenty musical comedies, a symphony, three string quartets, more than 200 songs, and many other pieces.
Hypothesis: Alexander Aleksandrovich Alyabyev was known as one of the fathers of the Russian art song.