I made a microphone of pure gallium. I used a sugar-mass center in the silicone-mold, the idéa is to remove this core to get a hollow microphone by sonicating the gallium microphone in a ice-water bath, the sugar-mass will dissolve. As you can see I used to little gallium so the microphone is only half. I have ordered more gallium. The microphone will be used i a music-video where it will melt, probably by holding it in the warm hands by the singer and also by letting propylene gas inside it through a thin teflon-tubing and setting it on fire, this will be filmed with 960fps.