Which South Indian poet and composer has a school of music where Sooryakantam  is called Chāyāvati ?
Suryakantam: Suryakantam or Sooryakantam (pronounced sūryakāntam) is a rāgam in Carnatic music (musical scale of South Indian classical music). Suryakantam:  It is called Chāyāvati in Muthuswami Dikshitar school of Carnatic music.
i don't know