Listen to Oh Sir Sailavaasaa online. Oh Sir Sailavaasaa is a Telugu language song and is sung by J. Purushothama Sai, M.M. Sreelekha and Ranganath. Oh Sir Sailavaasaa, from the album Srisailavaasaa Gowreesa, was released in the year 2002. The duration of the song is 4:39. Download Telugu songs online from JioSaavn.