For the first concert on Saturday, May 18, Valery Gergievleads leads the orchestra in Schumann’s Piano Concerto featuring pianist Daniil Trifonov and Schubert’s Symphony No. 9, “Great.” On Monday, June 3, new Music director Yannick Nézet-Séguin leads The MET Orchestra for the first time at Carnegie Hall in a program of French works with mezzo-sopranoIsabel Leonard singing Dutilleux’s Le temps l’horloge and Ravel’s Shéhérazade, alongside Debussy’s La mer and Ravel’s Daphnis et Chloé Suite No. 2. Maestro Nézet-Séguin returns the following week on Friday, June 14 with the orchestra and mezzo-soprano Elīna Garanča singing Mahler’s Rückert Lieder on a program that also includes Bruckner’s Symphony No. 7.