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.
Pritam Pritam Chakraborty (Bengali: প্রীতম চক্রবর্ত্তী ) (born 14 June 1971), better known by the mononym Pritam, is an Indian music director, composer, singer, instrumentalist and record producer for Bollywood films. In a career spanning nearly one and a half decades, Pritam has composed musical numbers (songs) for more than a hundred Bollywood movies. He has won 3 Filmfare Awards, 4 Zee Cine Awards, 3 Star Screen Awards, 3 IIFA Awards and 3 ITA Awards among many others.