The last in PCMS's "late-style" concerts, at 8 p.m. Monday at the Perelman Theater, Broad and Spruce Streets, features Biss in Schubert's Piano Sonata in A Major, D. 959, and, with tenor Mark Padmore, Schubert's Schwanengesang. Tickets are $25, $10 for students. 215-569-8080, www.pcmsconcerts.org.