Amateur Chamber Music Players -non-profit association that facilitates informal playing and singing by people of all ages and nationalities, beginners to professionals; large percentage are pianists, international scope. 5,200 + members, headquartered in New York City.
Intermusica - an international grouping of independent
organizers of music courses for
amateur musicians (European)
Music for the Love of It - Berkeley, California based organization for music workshops, has extensive links lists for workshops.
Bärenreiter-Verlag Karl Vötterle GmbH & Co. KG
Breitkopf & Härtel KG
Dover
Editio Musica Budapest
Edition Peters
G Henle Verlag
G. Schirmer, Inc.
International Music Company
Schott Musik International
Universal Edition Verlag
Robert Leinau Musikverlag
Carl Fischer
PianoMedia.com - a website dedicated to promoting classical pianists.
Arnold Schoenberg Center - definitive site on all matters of Schoenberg. I really enjoy his Strauss waltz transcriptions for piano and string quartet, there are 2 full recordings about 10 minutes each offered for free listening.