When I used to live on Beethovenstraat, I loved to pop down to the Bachzaal, a few blocks away, to get my fill of classical music. I'll never forget one striking performance by a music professor playing Scriabin so intensely, I developed a great fondness for the composer.
The Bachzaal is a venue where music students hold recitals and occassionally professional musicians come to play. Most events are free, and it's unlikely the place will be crowded, so you can enjoy fine classical music without all the commercialism.
More Info: Trams 5 & 24, Bus 15.
Parking available in the neighboorhood.