Preparatory cellist Joseph Mostwin will appear in the Londontowne Symphony Orchestra’s Rising Stars! concert featuring the winners of the statewide Young Artist Competition. Mostwin competed and won last November, and on Saturday, March 9, at 7:30 pm, the concert for the winners will be held at St. Johns College Key Auditorium. Mostwin will play Tchaikovsky’s Variations on a Rococo Theme.