<P> Among the most famous AFM actions was the 1942--44 musicians' strike, to pressure record companies to agree to a royalty system more beneficial to the musicians . This was sometimes called the "Petrillo ban", because James Petrillo was the newly elected head of the union . Petrillo organized a second recording ban in 1948 (from January 1 to December 14), in response to the Taft--Hartley Act . </P> <P> The early 1960s marked a new beginning to the music industry . Rock and roll became mainstream in the 1960s . After the second World War, American culture entered the baby boom era . Rock and roll brought an explosion to the music industry market . It became "mainstream" music, proving its popularity through record sales . </P> <P> By 1970s, North American music had divided in into more genres than ever before . As more genres were entered the market, record sales accelerated as well . Earlier genres such as classical, jazz, and rhythm and blues contributed to new sounds such as gospel, rap, and hip hop . </P> <P> At the AFM convention in Las Vegas on June 23, 2010, the AFM elected Ray Hair for a three - year term as president . Hair was re-elected for an additional three years in July 2013 . He was elected for a third term in June 2016 . </P>

American federation of musicians of the us & canada