If you are interested in a few old string instruments and drums, in a few rooms, with no actual music involved, then this is the place for you! The architecture of the building is actually more interesting. At least it was free.
It's free & right of the square. But not air conditioned & not what you might expect from the title & size of the place. I was hoping for some kind of scene like live music, but we literally just wandered through the quiet, hot rooms looking at the various instruments & artworks.