If you are dreaming about bagpipe and hear melodious and beautiful music out of that bagpipe it symbolizes satisfaction and happiness. If you dream of hearing terrible music playing out of bagpipe it denotes disaster and unhappiness you might face in near future.
Dream dictionary: Bagpipe dream meanings
The bagpipe in dreams is the symbolism of tranquility and goodness, no matter if you hear the pipe or play with it.
(Musical instrument) In a dream, a bagpipe represents music, travel, or it could mean profits.