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.
C. R. Vyas Chintaman Raghunath Vyas (Marathi: चिंतामण रघुनाथ व्यास ; 9 November 1924 – 10 January 2002), popularly known as C. R. Vyas, was an Indian classical singer. He was renowned for singing khyal style.