Following two sold-out performances, Seong-Jin Cho returns for his third concert at Carnegie Hall. The “uncommonly sensitive and effective pianist” (The New York Times) begins the concert with a timeless suite by Handel, aptly paired with Brahms’s quintessential Handel Variations. The program also includes R. Schumann’s Symphonic Etudes, another effective set of musical variations that nicely complements the Brahms.