Mozart often wrote to his family that certain variations or sections of pieces were so successful that they had to be encored immediately, even without waiting for the entire piece to end.
Emanuel AxPianists don't argue too much generally because we have a hard enough time just getting things right. Arguing is for string players.
Emanuel AxI have been trying to find out exactly when listeners and performers decided that applause between movements would not be allowed, but nobody seems to have been willing to admit that they were the culprit.
Emanuel Ax