1778莫扎特在巴黎上演交响曲31号(K297), 下面摘自他当时给他的父亲的信.
"Right in the first Allegro there was a passage which I knew must please them: the whole audience was carried away by it and there was great applause. Knowing while composing it the great effect it would have, I brought it in again at the end and the applause began again. They liked the Andante too, but in the last Allegro---because I had heard that they usually begin finales here like the first movements, unisono with all the instruments, I started with only two violins playing piano for eight bars, immediately followed by a forte, so taht the listeners made a `sh' sound in the piano....but then came the forte and they began to clap as one man..."