Vintage metronome

A metronome is a device used to help musicians keep time while playing music. It produces a steady, regular pulse, typically in the form of an audible click or beep, that can be set to a specific tempo, or speed of the music. Metronomes can be mechanical, using a pendulum to produce the regular pulse, or electronic, using a quartz crystal oscillator or other means to generate the sound. Prior to the invention of the personal computer and later electronic devices, Metronomes were mechanical standalone clockwork devices, but now can be found in various forms, including smartphone apps, and computer software. Musicians use metronomes to improve their timing and rhythmic accuracy, and to ensure that they are playing at a consistent tempo. They can be especially useful for practicing difficult passages or for ensemble playing, where multiple musicians need to stay in sync with each other.