A metronome is a device that produces an audible click or other sound at a regular interval that can be set by the user, typically in beats per minute Stock Photo -
My Drummer Buddy - BPM 100 (Beats Per Minute, Music Tools and Utilities, Tempos and Grooves for Practice, Jamming, and Songwriters) MP3 Download & Lyrics | Boomplay
100 BPM Metronome - YouTube
100 Beats Per Minute Interactive Click Track Metronome for Computers, iPhone, and Tablets