My wife and I, both 70+, will shortly (9 July) attend a classical music concert (Ravel, Mozart, Mayer) in Wernigerode, Germany and would like to know what clothing is appropriate. Here in the Netherlands jeans and sweater/T-shirt is quite normal, but I don't know what Germans do.
This question (Standards of dress for a classical concert in the Czech Republic) suggests suit and tie for the Czech Republic in March 2019; a suit seems rather warm for July, but "when in Rome..." may apply.
I hardly expect that we would be refused entry, but I would feel uncomfortable if I were the only one without a collar and tie (and equally if I were the only one with). This will be part of a walking/sightseeing holiday, so we would not normally pack formal clothing, but we are travelling by car so we can take extra clothing if necessary.
What would typical Germans wear for a classical concert?
Edit 13 June: I also mailed the concert hall; here is their reply (Google-Translated):
Since Wernigerode is a holiday resort on the Harz and we also welcome many spontaneous tourists to our concerts, there is no clear dress code. Unusual with us is rather the classic evening wear — therefore you can do little wrong with casual chic, i.e. shirt or even shirt and jeans are just as fine as a suit.
Update 14 July: I wore cotton trousers and an open-necked cotton shirt and my wife a summer dress; we felt quite at home. I saw a few men wearing suit and/or tie but most dressed as I did, most women wore a summer dress or slacks and blouse. A few people (men and women) did wear jeans and didn't seem to get disapproving looks.
General advice thus: casual chic/smart casual.
And yes, it was a good concert!