Two nights of the Richmond Symphony with guest artist Orion Weiss on piano, one of the most sought-after soloists of his generation, known for both his technical skill and emotionally crafted performances. The Altria Masterworks 4 program for both nights features Ludwig van Beethoven’s Piano Concerto No. 5 Opus 73 “Emperor,” as well as the epic masterpiece by Gustav Mahler, Symphony No. 5 in C-Sharp Minor. Tickets cost $10 to $82. Saturday show at 8 p.m., Sunday matinee at 3 p.m. dominionenergycenter.com.