A Musical clock is a clock that marks the hours of the day with a musical tune played from a spiked cylinder either on bells, organ pipes, bellows, combs and even dulcimer strings. The earliest ones began in mainly churches and would be used to mark times for the public and for farmers in fields to tell them when it was sunset dawn and lunchtime.

Some musical clocks play a tune each hour where as others are known to play every 3 to 4 hours. This is seen by many to be an idea originated to do with Roman and Angelus times.