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). It is the 17th "melakarta" rāgam (parent scale) in the 72 "melakarta" rāgam system of Carnatic music. It is called Chāyāvati in Muthuswami Dikshitar school of Carnatic music.
Mararanjani Mararanjani (pronounced māraranjani) is a rāgam in Carnatic music (musical scale of South Indian classical music). It is the 25th "Melakarta" rāgam in the 72 "melakarta" rāgam system of Carnatic music. It is called Sharāvati in Muthuswami Dikshitar school of Carnatic music.