This was a pair of concerts of Rachmaninov’s piano concertos commemorating the 145th anniversary of the composer. It also was uniting two musicians who are intrinsically linked by their association with Rachmaninov’s music. Denis Matsuev is among the finest Russian pianists, and since winning the Tchaikovsky Piano Competition in 1998, he has developed a formidable reputation for his charitable activities, including appointment as a UNESCO Goodwill Ambassador. ...