Question: Which South Indian poet and composer has a school of music where Sooryakantam  is called Chāyāvati ?
Sentence (from "Muthuswami Dikshitar"): Muthuswami Dikshitar (March 24, 1775 – October 21, 1835) was a South Indian poet and composer and is one of the Musical Trinity of Carnatic music.
Relevant evidence: Yes