Tamara Mumford has replaced Lieberson in the two concerts, which were assembled by pianist Richard Goode as part of his Carnegie Hall Perspectives series. The December 7 program features soprano Dawn Upshaw, pianist Jeffrey Kahane, and others, and includes songs and chamber music by Mozart and Haydn. The January 14 event includes Schubert songs, a Schubert sonata, and Janšcek's song cycle Diary of One Who Vanished, with tenor Matthew Polenzani.

Lieberson has canceled a number of scheduled appearances this year, including the world premiere of John Adams' Doctor Atomic, as she recovers from a back injury. According to a statement from Carnegie Hall, doctors have advised her to "reduce her performing schedule in order to allow her back to heal and build her strength."

Carnegie also announced that Emanuel Ax will give the New York premiere of Chen Yi's Ji-Dong-Nuo at his recital on December 4. The program also includes the New York premiere of Kaija Saariaho's Ballade and Ballades by Chopin and Liszt. Ax will give the world premieres of the Saariaho and Chen Yi works in Birmingham, England, on November 13.