There is something curious about the various published parts for this piece. If you listen at 20:36 to 20:38, all four instruments play the same rhythm: "8th note, 8th rest, 8th rest, 8th note" in the 2/4 time signature for two measures. This is how the full score shows the music, so The Amadeus Quartet plays that section "correctly." But there must be a set of parts (from a different publisher, I suppose) where the viola plays, on the low "f" the rhythm "8th note, 8th rest, 8th note, 8th rest" which is incorrect according to the score. There are several quartets that play the mistake, so it must be a transcription error in the viola part rather than a true mistake on the part of the players. Listen to the Emerson quartet and the Crimson String Quartet play this movement, and they both play the "mistake." And there are several others. But most quartets play the part correctly, as does the Amadeus here. In the score, the measures in question are 4 and 3 measures prior to rehearsal number 8 in the fourth movement. I just wonder which publisher has the correct part and which publisher has the incorrect transcription. My hunch is that it is an American Publisher who go it wrong. The "correct" renditions seem to be played by European String Quartets
