Learn the Sahana varnam, composition of Tiruvotriyur Tyagayyer from Shri Chitravina Ravikiran. There are many masterpieces of great composers in this raga. This Sahana varnam, Karunimpa set to Adi talam will provide a strong base for further learning. Students may also refer to the Tiruppugaazh in Sahana, Teerapiniteera to understand the raga better before learning this varnam.
Notation can be found here