People who play a ukulele say the four-string instrument is easy to learn, lightweight to hold and not loud enough to annoy housemates or pets. But somehow it’s more fun when you can strum along ...

The musician might also knock or tap the sound-boards of stringed instruments percussively with their strumming hand ... BPM to the sound-board of a ukulele. A 10kΩ pot controls the meter ...