The National Association of Broadcasters (NAB), representing 31 commercial and public radio stations, and the South African Music Performance Rights Association (SAMPRA), a collecting society for royalties for sound recordings, disputed the appropriate rate of royalties broadcasters should pay for broadcasting sound recordings. Following legislative amendments in 2002 to the Copyright Act 98 of 1978 and Performers' Protection Act 11 of 1967, commercial and public radio stations became obliged to pay needletime royalties to owners of copyright in sound recordings and performers. SAMPRA and NAB proposed different formulae for calculating royalties. SAMPRA proposed a maximum 10% of net broadcasting revenue for 100% music usage (scaling down proportionately). NAB proposed a complex formula involving time channels, profit margins, and audience reach resulting in approximately 1% of net revenue. The Copyright Tribunal (Sapire AJ) adopted SAMPRA's formula but reduced the maximum rate from 10% to 7%. Both parties appealed. Evidence before the Tribunal included economists, industry experts, and international comparisons showing most countries pay 1-5% of revenue.