Arts DC Chamber Musicians Concert By Kathleen Donner - December 19, 2019 247 Share on Facebook Tweet on Twitter On Sunday, Jan. 19, 3 p.m., DC Chamber Musicians presents a concert featuring Beethoven String Quartet No. 9; Debussy Piano Trio; and Iwazen Trio for Flute, Horn and Piano. Admission is free; donations accepted. St. Mark’s, 301 A St. SE. dccos.org.