Hi, I’m Tony Eyers, forum creator. Stela and her ilk have been deleted. I’m now visitng the forum every day to remove the garbage.
Re 415, Zen-on now have a very affordable and highly regarded baroque alto. I’ve played in a baroque ensemble for the last 25 years, all at 415. The music sounds different and in my view better at that pitch. Our soprano certainly appreciates not having to sing a semitone higher.