Vladimir Feltsman finally got to Carnegie Hall last week. Eight years ago, Feltsman, the Moscow-born son of a prominent Jewish pop composer, was considered one of the Soviet Union's most promising young pianists. Then he applied to the authorities for an emigration visa. Suddenly his engagements were canceled, his recordings yanked off the radio. Even a private performance at Spaso House, the U.S. Ambassador's official residence in Moscow, was marred when the piano was mysteriously vandalized before the concert. Apart from a few performances, mostly on battered uprights in remote villages, Feltsman was a musical nonperson.
His cause, however, was taken...