Eduardo del Paso wrote:

>I've attended several times concerts in Europe (Saint Chapelle in Paris,
>StMartin in-the-Fields in London or churches in Italy)normally are very
>casual, even jeans and sweter; only if there is a oppening of Opera season
>or some Salzburg Festival concerts, for example, when some times a more
>formal attire is required, some cases even black tie.

I bought my first tuxedo (when I was over sixty!) for a Glyndebourne
performance to which my wife and I had tickets.  While most attendees
were similarly attired, some were wearing casual clothes.

wm