rstrauss wrote:I would also have the concerto played with a modern trumpet... but it is still a matter of trumpet.
fould you do the same with a harpsichord concerto and have it played by a piano with all the usual consequences?
Personally, yes, taking responsibility for the choice and justifying it somehow, unless it is "tradition" to do so. This whole discussion is degenerating, in the sense that there are so many examples in history, both recent and ancient, of adaptations, transcriptions, and re-orchestrations, that I really have the impression we are all playing the virgin at the temple.
Let's put the discussion on a practical level. If Pollini arrives and tells you he wants to play Scarlatti on the piano, what do you do, tell him no? If you are conducting an opera at the Metropolitan in New York and there are recitatives accompanied by harpsichord, but the stage is so large that the singers can't hear a damn thing, what do you do, keep the harpsichord and screw everything else up? On the way back from Pisa the other night, my choir master brought up a point saying that there are about eighty different versions of the "Puer natus est in nobis" [Note: user wrote Papae Marcelli, likely referring to Palestrina or a specific work], all more or less consistent with the performance practices of various churches. Now, putting aside the fact that in past centuries musicians were not afraid of their own shadow and if they found it necessary to re-transcribe something they did so, as my teacher says, the point is not to understand which version is better; the point is to be able to sing them, or conduct them, or play them all well.
In my career as a singer, I have often sung for study arias written for soprano, or baritone, or any other vocal type. There are recordings of Callas singing pieces for baritone and they are wonderful, even just for the technical value they possess. In essence, if a concerto written for clarinet is better played by a violin, I would be delighted to take all the responsibility in the case and have it played by a violin.
rstrauss wrote:Now I don't know if those who say they practice philology have these same motivations, but they are certainly not ideological, but rather dictated more by correctness toward the original writing of a piece.
"Correctness," as will be said later, is ideological. Personal taste is not. You are talking to us about your personal taste, and that is legitimate, but you must understand that it is YOUR personal taste; it is not a common or right criterion for everyone, and IT IS NOT a historical criterion, because it is likely that Haydn and Bach would have disagreed with you.
From my point of view, then, this derives from OUR vision and consideration of the musical text. The score is not a law; it almost never has been. Things change just around 1900, but talking about how Bach should not be performed on the piano is something that has to do only with taste, not with the practice of Bach's time, nor of the times following Bach.
rstrauss wrote:It's clear that when I speak of "correct," I assert it based on what I would or would not do... and I don't mean correct in the sense of right, but correct in the sense of respect for the original, which can be a feeling that someone perceives and someone else does not... or simply isn't interested in.
"Correctness" in the world of music is a discussion truly full of pitfalls... and some of these pitfalls have been advanced precisely by musical philology. I would like to remind everyone that most autograph orchestral scores are riddled with errors, which were sometimes corrected by copyists but, in some cases, have been passed down without any correction. I know very well that this is a different issue compared to the choice of a solo instrument for a concerto or an instrumentation for an ensemble, but we should evaluate how often even the most important choices depend on contingencies. The composers of old wrote for specific performers because those were the ones available to them. Much music was written "a secco," without knowing what the ensemble that would play it would be, and only later was it orchestrated or instrumented. Which is somewhat the reason why some Baroque solo concertos have a long tradition of authorial rewritings: flute, oboe, and violin share many pages in the history of the solo concerto... Now, if even the composers did not live through this problem, why must we live through it?!