Prophesy and music are often closely related in the Bible.
"... you will meet a procession of prophets coming down from the high place with lyres, tambourines, flutes and harps being played before them, and they will be prophesying." - 1 Samuel 10:5
"... for the ministry of prophesying, accompanied by harps, lyres and cymbals ..." - 1 Chronicles 25:1
So what is the connection that God makes between prophesy and music? Why do you think He makes it?