Piano trios;Violin and cello sonatas Violin and cello sonatas piano trio & violin sonata Piano Trios;Cello Sonatas Beethoven the cello sonatas Piano trios 1 & 2：Viola sonata The viola and piano sonatas Trio for piano,violin and cello op.70,1 Trio for piano, violin and cello no. 6 Trio for piano, violin and cello no. 7