Airtel Super Singer 4 included a guest judge who was a veteran singer of what languages?
L. R. Eswari Lourde-Mary Rajeswari Eswari (L. R. Eswari) is a veteran playback singer of the Tamil cinema, Telugu cinema, Malayalam cinema and Kannada cinema industries. She also sang in other languages like Hindi, Tulu, and English.
Mano (singer) Nagoor Babu, known by his stage name Mano, is an Indian playback singer, voice-over artist, actor, producer, television anchor and music composer. He is a recipient of several awards such as the Nandi Awards from the Government of Andhra Pradesh and Kalaimamani award from the Government of Tamil Nadu.