This piece was written to be sung acapella and is beautiful. I heard it done with instrumentation at a concert and it just sounded terrible and didn’t have the same angelic heavenly sound to it.
What’s your source on this? Aichinger lived 1564-1628. In this time period it was quite usual for some or all the vocal parts to be doubled, or even replaced by instruments, usually brass. No specific instrumental parts were written since none were needed. Aichinger was a student of Gabrieli, who did this to great effect in his multi-choral pieces for St. Mark’s, Venice. No way did he have enough singers to field 24 different parts in equal measure. The brass played a huge role in the “choral” music of this period.
Now, the brass instruments of the 16th-17th c. were quite different – gentler and mellower then the big, bright instruments of today. So the players of vansensei’s arrangement will hopefully be aware of how to best emulate such a sound on modern instruments, and not blast away like it’s Sousa….
Polyphony was often accompianied, there was no monolithic practice. I suspect the same reasons were that we have today: ie the choir needs the help etc.
Unless you have a huge choir, you are probably better off doubling the parts on the organ, not with modern brass instruments. Few amateur choirs are loud enough to compete with orchestral brass instruments.
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