Henk Reints' Highly Configurable Metronome
Instructions:
 
See also my Chord Progression page (in Dutch) and my Multi Tone Generator.
N.B. This page was fully written in HTML5 and JavaScript and tested and found working using Chrome.
If it does not function as it should, then most probably you are using an unsuitable browser or messed up its settings...
And Chrome's timer slows down to max. 60 BPM if this is not the Active Tab. Not my fault. Consider it a "feature"...
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