The tech is called Music: Not Impossible (M:NI), and it's the brainchild of former Hollywood producer turned entrepreneur Mick Ebeling, founder and CEO of Not Impossible Labs. The user's kit includes two battery-powered wristbands, two ankle bands, and a harness that fits across the back and shoulders. It interfaces directly with a venue's sound system and sends electrical pulses (coordinated with colored LED lights) corresponding to various tracks in the music to the sensors against the skin. Lady Gaga, Hans Zimmer, and Pharrell are fans, with the latter declaring he had "felt the future" after trying M:NI out. The Las Vegas show was presented by Zappos Adaptive and the Church of Rock & Roll.
Belquer explained that M:NI is not about frequency. The skin is a poor discriminator of frequency. It can detect between 10 Hz and 1000 Hz, whereas our ears can hear frequencies as high as 20,000 Hz. But skin is quite sensitive to shifts in intensity and amplitude, and that's what the M:NI system exploits.
The developers call M: NI a new musical instrument - well, or a new dimension in music. The commercial version of the device will be released next year.