O'Brien will receive the first of the roughly $10,000 MIDI-controlled self-strumming guitars when they start to roll off the line this year ...

This guitar, on the other hand, needs only a single musician but can create impressive walls of sound on its own thanks to some clever engineering. Called the Circle Guitar and created by [Anthony ...

But perhaps the most eye-catching innovation of the entire show was the Circle Guitar – a new innovation developed by Circle Instruments, which has been described as “a hyperinstrument that ...