RETRO FIND: This extremely rare instrument was rumored to raise the dead and cause insanity Benjamin Franklin's haunting 18th-century glass harmonica was brought back to life in the 1980s.

RETRO FIND: This extremely rare instrument was rumored to raise the dead and cause insanity Benjamin Franklin's haunting 18th-century glass harmonica was brought back to life in the 1980s.

RETRO FIND: This extremely rare instrument was rumored to raise the dead and cause insanity Benjamin Franklin's haunting 18th-century glass harmonica was brought back to life in the 1980s.

RETRO FIND: This extremely rare instrument was rumored to raise the dead and cause insanity Benjamin Franklin's haunting 18th-century glass harmonica was brought back to life in the 1980s.

RETRO FIND: This extremely rare instrument was rumored to raise the dead and cause insanity Benjamin Franklin's haunting 18th-century glass harmonica was brought back to life in the 1980s.

At its peak, the glass harmonica inspired compositions by Mozart and Beethoven, but later faded due to superstitions about its haunting sound. It was rumored to raise the dead and cause insanity.

RETRO FIND: This extremely rare instrument was rumored to raise the dead and cause insanity Benjamin Franklin's haunting 18th-century glass harmonica was brought back to life in the 1980s.