Source: http://ramsabode.wordpress.com/2012/09/21/vdr_sh/
Played mrudangam for the vocal concert of Vidhya Raghavan. The concert was organized by Sumanasa Foundation & V-Excel Educational Trust at Sastri Hall, Mylapore, Chennai for differently-abled children.
The song list was as follows:
 
Vocal:  Vidhya Raghavan
Violin: Lavanya Raman
Mrudangam:  R. Ramkumar
 
 
List of songs:
1) karuNimpa (varNam) – sahAnA – Adi – tiruvOTriyUr tyAgayyA
2) brOcEvArevarE – shrIranjani – Adi – tyAgarAja (AS)
3) rAkA shashi vadanA – takkA – Adi – tyAgarAja 
4) mA jAnakI – kAmbOji – Adi – tyAgarAja (AST)
5) sApashyat – jOnpuri – Adi – tirupazhanam pancApakEsar
6) mAdhava mAmava – nIlAmbari – Adi – nArAyaNa tIrtha
 
(Key: O=raga outline, A=raga alapana, t=tAnam, N=neraval, S=kalpana swaram, T=taniavartanam)