I have noticed recently, take this piece for example, The Thieving Magpie Overture by Rossini. There seems to be several versions in different keys. Why are versions made that are different to the original key?
From a transposition view, I can understand, especially with vocal lines. A Mezzo may not be able to reach the high Soprano notes. Instruments too, we have all heard of the Trumpet in b for example, but the instruments will remain the same won’t they?
However for pure orchestral, instrumental scores. Why tamper with the original brilliance? See I’m super confused because doesn’t this also adjust its general tone? If something is in a different key it will sound different, no? Even if it’s infinitesimal.