metronome

n. mechanical or electrical device that keeps rhythm by making regulated clicking noises, device used to keep the beat while playing a musical instrument (Music)

A metronome is any device that produces a regulated audible and/or visual pulse, usually used to establish a steady beat, or tempo, measured in beats-per-minute (BPM) for the performance of musical compositions. It is an invaluable practice tool for musicians that goes back hundreds of years.The metronome was invented by Dietrich Nikolaus Winkel in Amsterdam in 1812. Johann Mälzel copied several of Winkel's construction ideas and received the patent for the portable metronome in 1816. Ludwig van Beethoven was the first well-known composer to indicate specific metronome markings in his music, in 1817, but many performances of his music still vary widely from his tempo indications, particularly in slow movements.
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Noun
1. clicking pendulum indicates the exact tempo of a piece of music
(hypernym) pendulum

n. metronome, mechanical or electrical device that keeps rhythm by making regulated clicking noises, device used to keep the beat while playing a musical instrument (Music)

n. metronome, mechanical or electrical device that keeps rhythm by making regulated clicking noises, device used to keep the beat while playing a musical instrument (Music)