Which of the following is a type of bagpipe music?

In this instance, 'pibroch' is a form of bagpipe music which is known to be used by Scottish bagpipes. It mostly involves elaborate variations on a theme that is typically of a martial or funerary character. The meaning of the word pibroch is strictly recognized as "piping" in Scottish Gaelic (piobaireachd). It has for over four centuries been the music found with the Great Highland Bagpipe.

Noting its history, pibroch is a semi-classical art music that is usually assumed to have evolved from earlier traditions of bardic music of the late 15th or early 16th century. Initially played mostly on clàrsach (Gaelic harp), it has later come to be played on fiddles and Great Highland bagpipes.