the first time I heard this trio I wasn't too moved by the first three dumky, however after hearing the Heifetz version (and the other two wonderful musicians, Piatigorsky and Pennario?) I'm very much pleased by all four movements you have posted. You don't happen to have the 5th and 6th dumky, do you? Too bad Heifetz didn't record so much chamber music, but I'm soooo glad he even bothered to do so, for he does it very well