Wireless operators and ringtone suppliers in Canada could soon be required to pay more money to use ringtones based on popular melodies if the Copyright Board of Canada approves an expanded tariff on the public performance of music proposed by the Society of Composers, Authors and Music Publishers of Canada (SOCAN). Released last May, a new proposed tariff (Tariff 24) would require cell phone companies and ringtone suppliers to pay 10% of annual revenue up to a maximum of $30,000 per year. Tariff 24 is a new addition to the slate of tariffs relating to the public performance of music in a whole host of venues such as bars, dance clubs and public skating rinks.