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.
Sandeep Acharya Sandeep Acharya (4 February 1984 – 15 December 2013) was an Indian singer . He came in news after winning the second season of the popular reality television show "Indian Idol" in 2006. Acharya belonged to Bikaner in Rajasthan. He died on 15 December 2013 in Gurgaon's Medanta Hospital.