The 91st annual Stephen Collins Foster Memorial Service will feature jazz guitarist Joe Negri and students from St. Raphael School singing Foster melodies at 11 a.m. Friday at the Temple of Memories Mausoleum at Allegheny Cemetery, 4715 Penn Ave. Call 412-682-1624.

Renaissance & Baroque presents the Four Nations Ensemble performing Court and Concert, a program of French chamber music, at 8 p.m. Saturday at Synod Hall, 125 N. Craig St., Oakland. Ticket are $20 to $35, and student tickets are $10. Call 412-361-2048 or visit www.rbsp.org.