My last abode in Germany was owned by an opera singer who lived next door to me. We were on the second floor and one year around Christmas, she short-term rented the bottom floor out to a touring Russian folklore band. I'll never forget one day when she was singing, with piano accompaniment, in the adjacent apartment classical music for an upcoming recital, I was wailing along with a recorded background jazz, and below me the Folklore band struck up, also rehearsing for upcoming performances. What a wonderful cacophony. I wouldn't trade moments like that for anything.