It was 1991, and I went to see a whole bunch of bands at a little open air show in Cologne, incl. Dinosaur jr. and Sonic Youth, and it was probably the best concert I’ve ever been to. Nirvana were supposed to play, but they didn’t show up (or whatever - I didn’t care).
Sonic Youth since have morphed into extremely irritating aging rock stars (who don’t even mind selling their music at Starbucks - but, hey, as long as the good old dollar comes rolling in…), but back then they were just stellar.
PS: Funny I should eventually be moving to where these people now live (or so I hear - never seen them around Northampton).