A kilt-wearing musician is known as a piper or a BAGPIPER. The term 'piper' is derived from the Latin word for pipe, and refers to a musician who plays a type of wind instrument called a bagpipe. Bagpipes are a type of musical instrument that consists of a bag filled with air, a chanter, and several drones. The chanter is a double-reed instrument that produces the melody, while the drones provide a continuous background sound. Bagpipers typically wear a kilt, a traditional Scottish garment, while playing.