Thanjavur Quartet

Thanjavur Quartet were four brothers, Chinnayya, Ponnayya, Sivanandam and Vadivelu, who lived during the early 19th century and contributed to the development of Bharatanatyam and Carnatic music. They excelled in the art of Bharatanatyam.The brothers were employed in the courts of the Maratha King Serfoji II at Thanjavur initially, and then moved to Travancore to the Court of Swati Tirunal.
Musical training.
At the encouragement of the King they learnt the nuances of Carnatic music from a number of exponents of their time including Muthuswami Dikshitar. Dikshitar appreciated Vadivelu Pillai as an "ekasandhagrahi", one who had the ability to repeat a song heard only once. The quartet wrote a set of nine songs called "navaratna mela" in tribute of their teacher.
After a stint at the courts of Serfoji, the brothers moved to Travancore and were patronised by Swati Tirunal. The king appointed Vadivelu Pillai as the court musician. Vadivelu Pillai also learnt to play the violin gained expertise and demonstrated that not only Kalpita sangeetam but Manodharma sangeetam could also be easily and deftly played on the instrument. Vadivelu was the first to introduce Violin instrument to Carnatic music. He is also credited as the founder of Mohiniyattam. Until then Kathakali was the prevalent dance form in Kerala and was confined to male dancers. Vadivelu elaborated and refined Mohiniyattam along with Maharaja Swathi Tirunal, and this paved the way for female dancers in Kerala.
Compositions.
The four brothers composed numerous varnams and "kritis". Some of these are "Amba Souramba" and "Amba Neelamba", "Ambaneelambari" ("Neelambari"), "Satileni" ("Poorvikalyani"), apart from the "navaratna mala".