According to the AP, the Berlin State Opera, where Barenboim is music director, said yesterday that the 63-year-old conductor had been suffering from "a disturbance of his sense of balance," which was successfully treated. Previous news reports said that the conductor had been hospitalized after feeling "weak" and that doctors had not found any serious problems.

The Staaskapelle's tour begins on February 3 on San Juan and includes stops in Miami; Naples, Florida; Philadelphia; Boston; and New York, where the orchestra will play two concerts at Carnegie Hall on February 11 and 12.

The repertoire for the tour includes Mozart symphonies and piano concertos. Barenboim is to appear as pianist as well as conductor at several concerts, and to play the Concerto for Two Pianos with Radu Lupu on February 11 at Carnegie Hall.

Immediately after the tour, Barenboim, who is also music director of the Chicago Symphony, is slated to lead the orchestra in eight concerts between February 14 and 24. According to the Tribune, CSO management expects him to appear as scheduled.