A metronome is a device that produces a steady beat or ticking sound, helping musicians keep a consistent tempo while practicing or performing. It can be mechanical or digital, and it allows users to set a specific beats per minute (BPM) to guide their playing. Metronomes are commonly used by musicians of all skill levels, from beginners to professionals, to improve timing and rhythm. They can also be found in various forms, including smartphone apps and traditional wind-up models, making them accessible for everyone who wants to enhance their musical skills.