Carnegie Hall won't be able to present another song recital on the same date, but the venue has arranged a replacement concert by tenor Ben Heppner with pianist Thomas Muraco on October 25. The program, which features songs by Grieg, Sibelius, Tchaikovsky and Paolo Tosti, will be Heppner's first solo recital in New York since 1999. All tickets for the December 13 event will be honored for the October 25 concert.

Meanwhile, in Baltimore, Shriver Hall has engaged mezzo Stephanie Blythe to fill in for Bostridge on December 10. She and pianist Warren Jones will give a concert of songs by Brahms, Duparc and de Falla — the same program, in fact, that they're giving at Carnegie on December 7.

Information on these and other concerts at the two venues is available at www.carnegiehall.org and www.shriverconcerts.org.