The hats themselves are made from wool felt embedded with steel wool to create pressure sensors. These in turn allow the manipulation of sound. The hats use a Lilypad Arduino that was programmed with MAX/MSP software to use them as MIDI controllers. The funny, colorful balls control volume and speed. The LEDs were added mainly for theatrical reasons. Once they are illuminated, it means that the hat is ready to play.

这顶帽子有个很敏感的传感器，每当你转头或者做其他动作时，该帽子就能够接受感应，且将其转换成midi 命令，让乐器发声。设计者Sunny Oh 和Anna Obikane。帽子上的羊毛绒小球的按捏，天线的按捏都会带来不同的反应。@oioi：基本上这还是一个先锋实验性的玩意，因为实在是太无厘头了。