Acoustical Society of America
Contains meeting and membership information, a list of publications, and a number of natural and man-made sound samples in the .au format.
asa.aip.org Details

Choristers Guild
An ecumenical organization of directors of children's and youth choirs and publisher of music and related materials. Includes information about events and scholarships.
www.choristersguild.org Details

Conductors Guild
Includes listing of activities and publications, and downloadable composer contract forms.
www.conductorsguild.org Details

Electronic Music Defense and Education Fund (EM:DEF)
Provides legal assistance to members of the electronic dance music community prosecuted, targeted, or harassed by the government or police.
www.emdef.org Details

Film Music Society
Devoted to the preservation of classic Hollywood movie and television scores. Includes information about many Hollywood composers and film scorers, and membership information.
www.filmmusicsociety.org Details

IFPI
International organization fighting music piracy and promoting fair market access and adequate copyright laws. Includes piracy news, market info, publications, and copyright FAQ.
www.ifpi.org Details

International Association of Music Information Centres
A world-wide network of organizations promoting new music, active in thirty-six countries. Each center is responsible for documenting and promoting the music of its own country or region. Includes basic association information.
www.iamic.net Details

Just Plain Folks
Organization of music industry professionals whose goals include the networking of members and the promotion of music worldwide. Includes a list of mentors, links and current member demographics.
www.justplainfolks.org Details

NAMM: International Music Products Association
Members represent every aspect of musical instrument manufacturing and retailing. Site includes information about membership, and all the promoted activities.
www.namm.com Details