Sankaradeva and Madhabadeva composed a type of songs in their plays known as anka or namar gita. There are 129 gitas composed by Sankaradeva for his 6 plays. In the case of namar gita, it is found on record that only 8 talas were used  - bisham, cutkala, domani, ektal, jauti, kharman, pari and rupal.  But in course of time, Sattras extended the number of talas by creating different rhythmic variations. About 74 such talas are being practiced in different Sattras.
(‘The legacy of Sattriya dance, drama and music’ by Bhabananda Barbayan, Nartanam, Apr - June 2016)

Nataraja Ramakrishna's virtuosity in dance and his improvisational abilities reached Raja Ganapathy Rao Pandya, the prince of Bhandara Samasthan near Nagpur, a great patron of arts. Kalyanji and Karthikji of Rayagarh state danced in Bhandara prince's court. With the initiative of a friend, Rambhav Sir Deshpande, Ramakrishna was asked to dance before the prince and a court full of patrons, singers and dancers. Ramakrishna requested Kalyanji to lend their tabla master who obliged him with delight. Rambhav gave the vocal support and during the memorable performance, everyone hailed Ramakrishna as "Nataraj", which later became his family name.
('Nataraja Ramakrishna: Crusader and Visionary' by M. Nagabhushana Sarma, Nartanam, Oct - Dec 2016)

Did 'U' Know - Monthwise listing