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.

這頂帽子有個很敏感的傳感器，每當你轉頭或者做其他動作時，該帽子就能夠接受感應，且將其轉換成midi 命令，讓樂器發聲。設計者Sunny Oh 和Anna Obikane。帽子上的羊毛絨小球的按捏，天線的按捏都會帶來不同的反應。@oioi：基本上這還是一個先鋒實驗性的玩意，因為實在是太無厘頭了。