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Rajhesh Vaidhya (Tamil: ராஜேஷ் வைத்யா) (or, Vaidya), is an Indian veena player hailing from Tamil Nadu. Besides performing on stage, he has worked with various film music composers. He also acted in the movie Viswa Thulasi and in Premi, a tele-serial. Vaidhya was a winner of the 2010 Kalaimamani award for his veena playing. 
Rajhesh Vaidhya has composed various albums and given many stage performances. He is the brother-in-law of S. Ve. Shekher. He was music director for the movie Vegam by S. Ve. Shekher, starring Ashwin Shekher. He has also worked with Vidyasagar, Harris Jayaraj, Bharathwaj, Deva, Devi Sri Prasad, Srikanth Deva,Isaignani Ilaiyaraaja and A. R. Rahman. He composed the music for K. Balachander's Sahana, a television series. He collaborated with Playing for Change, on the album Songs Around The World, (2008). He has performed with musicians and composers like Sir Elton John.
From a very early age, he started his tutelage under Smt. Jeyalakshmi and continued learning the Saraswathi Veena under Smt Rama Nambinarayanan. He also received advanced training under carnatic veena maestro Shri Chitti Babu.
- Kalaimamani award,Government of Tamil Nadu,2010.
- Asia book of records- maximum song snippets played on a Veena in an hour 
- http://newslivestreaming.com/2010-kalaimamani-awards-announced-by-tamil-nadu-govt/, Live News Streaming, 2010 Kalaimamani Awards announced by Tamil Nadu Govt, Kalaimamani Awards 2010 Winners, Retrieved March 5, 2011.
- http://www.thehindu.com/news/states/tamil-nadu/article1134445.ece, The Hindu, Tamil Nadu Govt announces Kalaimamani awards, Chennai, January 28, 2011, Retrieved March 5, 2011.
- http://www.behindwoods.com/tamil-movie-articles/movies-06/vegam-review.html, Behind Woods, Vegam a speedy retreat, Behindwoods Movie Review Board, Retrieved March 5, 2011.
- http://www.desinapster.com/showthread.php?t=2214, DesiNapster, Vegam [2007-MP3-VBR-320Kbps] , Retrieved March 5, 2011.
- http://www.rediff.com/movies/2003/mar/06sindhu.htm, Sindhu Bhairavi is back, Shobha Warrier, March 06, 2003, Retrieved March 5, 2011.