Chamber Music Amarillo: The ensemble celebrates “The Grandeur of Brahms” in a concert featuring the composer’s rarely performed Piano Quartet in A Major with pianist Jim Rauscher, violinist Rossitza Goza, cellist David Schepps, and Amarillo Symphony’s concertmaster Espen Lilleslåtten on viola. (7:30 p.m. Saturday; Amarillo Area Foundation, 919 S. Polk St.; tickets $40; 806-376-8782)