Sept. 15 & 27. This local ensemble performs Haydn’s String Quartet in G minor, also known as “The Rider;” Erwin Schulhoff’s Five Pieces for String Quartet; and Mendelssohn’s String Quartet in F minor with violinists Nathan Peters, Graham Emberton, and Paula Elliott; violist Ian Cumming; and cellist Sara Cumming. 7 p.m., Silver Maples of Chelsea (Sept. 15), 100 Silver Maples Dr., & Chelsea Depot (Sept. 27), 125 Jackson St., Chelsea. Free. chelseachamberplayers.com.