The Society for Chamber Music in Rochester is presenting their second free virtual concert, which will include Jessie Montgomery’s “Strum” (2006; revised 2012) & Beethoven’s “Symphony No. 6 ‘Pastoral’ for string sextet” performed by Juliana Athayde and Thomas Rodgers, violin, Aaron Mossburg and Marc Anderson, viola, & Christopher Haritatos and Benjamin Krug, cello.