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.
Prema Yin Prema Yin Ranee A/P Kali Kavandan (born 3 October 1986), known by her stage name Prema Yin, is a Malaysian singer musician and former contestant of "Who Will Win Malaysia Topstar", where she first became widely known to the public.