<P> For music, the requirements are referred to as the "MAPL system". Following an extensive public hearing process organised by the CRTC, the MAPL system, created by Stan Klees (co-creator of the Juno Award), was adopted in 1971 to define and identify Canadian content in pieces of music for the purposes of increasing exposure of Canadian music on Canadian radio through content regulations governing a percentage (25%) of airplay to be devoted to Canadian music . The percentage was increased to 30% in the 1980s, and to 35% effective January 3, 1999 . However, most new commercial radio stations licensed since 1999 have been licensed at 40% . </P> <P> Some stations--especially those playing formats where there may be a limited number of Canadian recordings suitable for airplay, such as classical, jazz or oldies, may be allowed by the CRTC to meet Canadian content targets as low as 20 per cent . Stations in Windsor, Ontario, are also permitted to meet lower Canadian content targets, due to Windsor's proximity to the Metro Detroit media market in the United States . </P> <P> Community radio and campus - based community radio stations often choose to meet higher Canadian content levels than commercial broadcasters because of their mandate to support up - and - coming Canadian artists and provide content not readily available on commercial radio or the CBC . However, CanCon requirements may be lower for campus and community stations as they often air large quantities of category 3 music . </P> <P> Before the MAPL system was established in 1971, Canadian music was regarded with indifference by Canadian radio, and during the 1960s, much of Canadian radio was dominated by British and American acts . This was a major hurdle for Canadian musicians since they could not gain attention in their home country without having a hit single in the United States or Europe first . Even after MAPL was implemented in the early 1970s, some radio stations were criticised for ghettoizing their Canadian content to dedicated program blocks, in off - peak listening hours such as early mornings or after midnight, during which the music played would be almost entirely Canadian--thus having the effect of significantly reducing how many Canadian songs would actually have to be played during peak listening times . These program blocks became mockingly known as "beaver hours". This practice is now prevented by CRTC regulations stipulating that CanCon percentages must be met between 6 a.m. and 6 p.m., rather than allowing a station to save all their Canadian content for off - peak hours . </P>

What are the four elements used to qualify a song as canadian