Original: The U.S. Music Publishers ' Association ( MPA ) , which represents sheet music companies , launched a legal campaign against such websites in December 2005 , the MPA 's president , Lauren Keiser , said the free lyrics web sites are '' completely illegal '' and wanted some website operators jailed .
Simplified: The United States Music Publishers Association ( MPA ) , which represents sheet music companies , created a campaign against such sites in December 2005 .