"Hal Leonard Corporation is a United States music publishing and distribution company founded in Winona, Minnesota, by Harold ""Hal"" Edstrom, his brother, Everett ""Leonard"" Edstrom, and fellow musician Roger Busdicker. Currently headquartered in Milwaukee, Wisconsin, it is the largest sheet music publisher in the world. <br> <br>(Bron: Wikipedia. Beschikbaar onder de licentie <a rel="nofollow">Creative Commons Naamsvermelding/Gelijk delen</a>.)"