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Sangeet Samrat Shri Chitravina Ravikiran teaches the composition Sarasamukhi, composed by Harikeshanallur Muttaiah bhagavatar, in the rare raga Gowdamalhar, set to rupaka tala.
The notation is available here
Sangeet Samrat Chitravina N Ravikiran teaches Shikivahana, a composition of Muthiah Bhagavatar, in the rare raga Hamsadeepakam.
Learn to sing the composition of Shri Muthiah Bhagavatar in Raga Janaranjani, Ganapate set to Adi taught by Shri Neyveli Santhanagopalan.
Notation can be found here