Bagpipes were a musical instrument. They consisted of a bag made of cloth with several pipes. A person who played the bagpipes was called a piper. Jamie McCrimmon was a piper. (TV: The Highlanders)
The Second Doctor said Jamie could join him, Ben and Polly in the TARDIS if he would teach the Doctor how to play the bagpipes. (TV: The Highlanders)
When the cat-like creature Marmaduke was aboard the TARDIS, he tore Jamie's bagpipes — then found them where Jamie had hidden them and got at them again. (PROSE: Constant Companion)