Yes, it is possible and not too difficult! Choose a thin glass, alas these are also the most expensive ones, and find out at what pitch it will "ping". Do this by tapping it gently with a teaspoon. Then sing a sustained note at the poor thing, at the same pitch but with a fairly heavy vibrato so as to be constantly moving off back to the note. If you can produce enough volume the glass will break. TWO THINGS: Wear eye procectors

and get the moment on film.

And , yes I can do it! It was my party trick at a famous party in 1977 in Abergavenny that was held in a cellar. On that occasion some one ( not me) beheaded a stuffed pheasant with a repro sword. Both were part of the decor in the aforementioned cellar. It was stuck back with lots of stickytape and the owner didn't notice for several weeks! We had good parties in the old days!