Warsaw short trip, what to do for a history and music fan?

Highly recommending the parks, national museum and museum of Jewish history, they're all great places to explore and learn about the city's history and culture.

I recall attending a daily Chopin concert in the evening, either at 6 or 8 pm, inside the historic old town area. Different musicians performed each day, and ticket prices were reasonable. I also visited the Museum of Warsaw, where I paid 25 zł for admission. The museum's lower floor was impressive, but I later discovered that there were five more floors above it, showcasing a vast collection of artifacts, maps, artwork, and historical information about the city and its events.