Playing with a plectrum is an activity that involves using a small, flat object to STRUM a stringed instrument. Strumming is the act of brushing the strings of an instrument with a plectrum in order to produce sound. This technique is commonly used on guitars, banjos, and mandolins. It is also used on other instruments such as the ukulele, lute, and harp. Strumming with a plectrum is a popular way to play music and can be used to create a variety of different sounds.