April 10. Tarun Bhattacharya studied at the very feet of Indian classical music's late giant, the one and only Ravi Shankar. A virtuoso of the santoor, India's spectral-sounding, 100-stringed equivalent of the Western hammered dulcimer, he's credited with revolutionizing the instrument via his ability to meend (glide) between notes and his invention of mankas, fine-tuners that greatly improve the santoor's performance. Besides working with Shankar on the sitar icon's George Harrison-produced album Chants of India, Bhattacharya has released literally hundreds of recordings under his own name and performed before royalty and at prominent venues around the world. This long-awaited return at the Kleinert/James Center for the Arts pairs him with tabla player Prosenjit Poddar and benefits Bengal's Santoor Ashram. (Pianist Mayumi Tsuchida performs April 18.) 8pm. $20, $35. Woodstock. (845) 679-2926; Woodstockguild.org.