1982: Viktoria Mullova is the USSR's violin sensation, winning the gold in the Tchaikovsky Competition. I983: she puts her state-owned Stradivarius on her hotel bed in Finland, dons a blonde wig to fool her KGB minders, and escapes to Sweden. Since then, she's been on of the supreme violinists - and she regularly crosses artistic borders. She has just re-recorded the Bach concertos, and this time she plays a Baroque violin. Sparks fly. Hear one of the concertos - a reconstruction recorded for the first time - on Barney Sherman's program at around 3 this afternoon.