touched echo is an electroacoustic artwork that uses bone conduction to take people back in time:

The visitors of the Brühl’s Terrace (Dresden, Germany) are taken back in time to the night of the terrible air raid on 13th February 1945. In their role as a performer they put themselves into the place of the people who shut their ears away from the noise of the explosions. While leaning on the balustrade the sound of airplanes and explosions is transmitted from the swinging balustrade through their arm directly into into the inner ear (bone conduction).

It’s a very interesting use of bone conduction to enable a private art experience in a public space.

via Todayandtomorrow