Scottish bagpipe music makes extensive use of marches played at a pace of approximately 90 beats per minute. Many popular marches are traditional and of unknown origin. Notable examples include Scotland the Brave, Highland Laddie, Bonnie Dundee and Cock of the North. Retreat marches are set in 3/4 time, such as The Green Hills of Tyrol and When the Battle's O'er. The bagpipe also make use of slow marches such as the Skye Boat Song and the Cradle Song. These are set in 6/8 time and are usually played at around 60 beats per minute if played by only pipe bands (and 120 if played with a military band).