BlairBros' Adventures

Can't remember too much but here we go.

I was at a shopping centre kind of place with a whole bunch of other people. We were all decreed by some ruling person to do certain jobs to help with the building, ie. helping with construction or playing music to entertain the others. I ended up being with outside near a tennis court, giving a harmonic overtone demonstration for some unknown reason.
Some fragment about a really bad quality something.