brass was prefered over aluminum. I wonder now what the prevailing opinion would be for Copper vs Brass whistles. Let’s confine the opinion to soprano whistles.
Brass first for me. There seems to be a slight difference in sound. Copper is ok (my water runs through enough copper pipes that I don’t really notice the taste), but I think brass sounds a little better in my opinion.
Of course, I like both more than Al (don’t make me try to spell it).
I much prefer brass to copper. Between brass and aluminum it doesn’t matter. I have never noticed any taste or smell associated with either brass or aluminum. I do get an unpleasant sensation with copper. I also like the nickel plated brass tubes. I have never been convinced one way or another that there is a difference in sound between the materials. I think head design is more important than materials.
Add another vote to the brass over copper list. Brass (for me) has no ‘taste’ – copper leaves a distasteful flavor on my lips. Copper seems to have a warmer tone than brass, possibly because it’s generally heavier. That would usually give it my vote – but I can’t get pass the taste.