Spooky Electric Instrument Played With No Hands
Puzzle 5 of Wonderful Sights Pack
Question is: Spooky Electric Instrument Played With No Hands
and the answer is: THEREMIN
Word Meaning:
THEREMIN — An electronic musical instrument that generates sound of varying pitch and volume depending on the proximity of the musician’s hands to two antennae mounted on the instrument.
Definitions from Wiktionary.