U.S. Copyright Office - an office of public record for copyright registration and deposit of copyright material. (Operated by the Library of Congress)
Billboard Magazine - the leading publication covering the music industry.
The International Intellectual Property Alliance (IIPA) - a private sector coalition formed in to represent the U.S. copyright-based industries.
MIDEM The International Music Market - International trade show for all music genres professionals, providing business and networking marketplace in Cannes, online contacts database of this industry, conferences and events.
The American Society of Composers, Authors and Publishers (ASCAP) - U.S. performing rights organization created and controlled by composers, songwriters and music publishers protecting the rights of its members by licensing and distributing royalties for the non-dramatic public performances of their copyrighted works.

Website also provides articles.
bmi - collects and distributes license fees on behalf of the songwriters, composers and music publishers it represents for the "public performances" including radio airplay, broadcast and cable television carriage, Internet and live and recorded performances by all other users of music.
The American Federation of Musicians (AFM) - helps musicians in negotiating fair agreements, protecting ownership of recorded music, securing benefits such as health care and pension, lobbying.
The Uniform Code Council (UCC) - provides universally accepted bar codes for products.
The Source Magazine - leading provider of urban entertainment with a focus on the hip-hop industry.
Vibe Magazine - leading provider of urban entertainment news.
Nielsen SoundScan - an information system that tracks sales of music and music video products throughout the United States and Canada.
Recording Industry Association of America (RIAA) - the trade group respresenting the U.S. recording industry by fostering a business and legal climate that supports and promotes our members' creative and financial vitality.