Sriranjani Santhanagopalan’s vocal concert, as part of Hamsadhwani founder R. Ramachandran’s birth centenary celebrations, brimmed with energy. Held on Tamil New Year’s day, the performance included a variety of Tamil works — from Avvaiyar’s ‘Vakkundam’ in Ritigowla as a prelude to ‘Tatvamariaya tarama’ by Papanasam Sivan to the concluding Thiruppugazh. Sriranjani took up the rare raga Jyothiswaroopini for detailing and …