Playing a banjo is an activity that involves strumming the strings of the instrument with the fingers or a pick. It is a popular folk instrument that originated in the United States and is associated with genres such as bluegrass, country, and folk music. Strumming is a technique used to produce a sound from the banjo by moving the fingers or pick across the strings. It is an important part of playing the banjo and can be used to create different rhythms and melodies.