Have either of you heard any Sergei Prokofiev or Edvard Grieg? Prokofiev's most famous piece is Peter and the Wolf (I think), but I've tried his Sonata for Two Violins, Opus 56. Grieg composed three sonatas for violin and piano, but I can't quite recall the titles. You might be able to find some old recordings of them somewhere. If you do listen to them, could you give me your opinions of them?