musical-md wrote:Hypothesis: Rubato affects rhythm.
1. If rhythm is affected by rubato, then the rhythm is necessarily changed.
2. If the rhythm is changed, then it's notation is necessarily changed.
3. To change the notation of the rhythm is not allowed by the canon of performance practice.
4. Rubato is nonetheless realized in music.
Conclusion: Rubato does not affect rhythm.
Or from Performance (as I introduced above)
A conductor only manages tempo (from your duration point of view), yet the orchestra maintains ensemble. The easiest (Occam's Razor) explanation for this reality is that there has been no change in the rhythm of the individual parts. Otherwise, is to believe an enormous amount of coincidences that have a probality approaching zero.
Excuse me butting in, but... not sequitur. One thing is notation, another is how this notation is turned into sound, the same as talking. You will agree that 20 people in the world might read the same word differently, even if the notation of that word does not change. The way you say "rhythm" is different from the way I say "rhythm" and that is again different from the way Joe does and that is different from how Andrew and Chris do, yet the word has not changed in any way nor could it be spelled differently without creating a new word. You probably roll the r and so will Andrew (if he is a Scot), but your r will be different from his, and yet the word remains as it is and not amount of spelling will reproduce your pronunciation or mine, unless, of course, you use phonetic spelling, which no one, apart from Prof. Higgins, can understand.
I would say it is impossible to write any piece of music as it actually is played by anyone. What you are talking about is not rhythm, but its notation. Rubato changes the rhythm so slighly that it would be impossible to notate, yet, when we hear a a piece played with rubato, we are normally able to write it down using the same symbols the composer uses, the same way I can hear you say that word and write "rhythm" and not rheethm" or rhuthm" or rheythum".
You tak of the orchestra. Have you forgotten that the orchestra is no longer a series of individuals, but a gigantic, unitary, instrument in the hands of a master (in the sense of principal) musician? And do you not consider that rehersals exist and that all the orchestra know how the master musician wants them to play? You also do not consider that there is another way to keep ensemble, and that is not to follow a rhythm, but to follow the music. That is, the timanist know when to come in not because he is going upt-da-da, but because he knows he comes in just after the violins have stated the second theme. This does not change, no matter how much rubato the violins have used, because the clue is not the rhytm, but the theme.