Piobaireachd ("pee-brock") is the classical music of the great highland bagpipe. It is less commonly referred to as Ceol Mor, meaning Great Music. It is an entirely different from the category of music known as Ceol Beag (or Little Music) that includes marches, slow airs, and the various idioms of dance music (jigs, reels, strathspeys, and hornpipes).
Piobaireachd tunes are often several hundred years old, dating as far back as the 1400's. It is distinct from the other forms of Celtic music in that it is only traditionally played by a solo piper on the great highland bagpipe.
Many pipers consider Piobaireachd to be the highest form of bagpipe music and also most satisfying and challenging to play. The world's most prestigious piping competitions, such as the Gold Medals at Inverness and Oban, are won by pipers who compete by playing Piobaireachd tunes.