Listen to Thumbi Vaa online. Thumbi Vaa is a Malayalam language song and is sung by Ilaiyaraaja and S. Janaki. Thumbi Vaa, from the album Olangal Thalam Thettiya Tharattu Ashtapadhi Thira, was released in the year 2005. The duration of the song is 4:28. Download Malayalam songs online from JioSaavn.