Chamber Orchestra Pittsburgh and Pittsburgh Camerata collaborate on two concerts March 5th and 6th at Levy Hall and Shadyside Presbyterian. Argentinian composer Martin Palmeri, a cantata by Felix Mendelssohn, Hear My Prayer; and Villa Lobos with the Bachianas Brasiliera No. 9 with exceptional soloists, bandoneon, piano and a swinging bass from Jeff Mangone. The Camerata's Mark Anderson, also of Shadyside Presbyterian, has prepared the singers. Mark joins Edward Leonard, Artistic Director and Andrew Swensen, Executive Director of the Chamber Orchestra in a conversation with Jim Cunningham.