occasions require jackets to be worn, whereas less formal occasions do not, and only the waistcoat is worn. On semi-formal occasions, the jacket is not worn, but a long-sleeved shirt is worn under the waistcoat. This increases the formality of the outfit, but decreases the comfort. On occasion, no waistcoat is worn, in which case the shirt sleeve must be of long length. Pipe Major uniforms are usually different, to distinguish them from the other members of the band. More traditional highland dress may be worn, sometimes with a feather bonnet. Competition Competition is a primary focus for many pipe bands throughout the world. Every year, mainly in the period from spring to autumn, pipe bands around the world compete against each other at various venues, often at Highland festivals. For many, this usually culminates in the World Pipe Band Championships, held on the 2nd weekend of August. A typical season for many competing pipe bands might include ten or more of these competitions. Europe (especially the UK and Ireland), North America, Australia, and New Zealand have active competitive pipe band communities, but there are competing bands from throughout the world. Since 1930, when the Scottish band association (today known as the Royal Scottish Pipe Band Association) was formed, there has been a World Pipe Band Championship competition, known as 'The Worlds' held annually in Glasgow during August. For competitive bands, the title of World Champion is highly coveted, and this event is seen as the culmination of a year's worth of preparation, rehearsal and practice. The entirety of the World Championships takes place on one day in August, on Glasgow Green. Typically, several hundred bands attend, traveling from all over the world. Bands arrive early and, in most grades, are required to perform in a qualifying round which takes place in the morning. The top bands at the end of the qualifying round play in a second event in the afternoon to determine an aggregate winner. To win, Grade One bands must perform in two events, a March, Strathspey & Reel event (known as a "set" or "MSR") which consists of three pre-arranged tunes, and a Medley event, which consists of a short selection of music chosen and arranged by the band. The rules for the medley contest are very open, requiring only a minimum and maximum time frame (between 5:30 and 7 minutes) and a minimum of different