COSCAP is a non-profit making copyright membership organisation representing, the performing and reproduction rights in music of composers, authors and publishers, and the related rights of performers and producers of sound recordings and videograms. Their direct relationship with similar organisations, increased vigilance, as well as the expansion of its licensing network across a broader music usage spectrum, has resulted in increased revenue for COSCAP since inception, but that is not to say that the organisation does not have its challenges, which it tries to tackle every day.
Music Publishing is the business of protecting and promoting song copyrights and collecting the royalties that these copyrights generate. Think of a song as intellectual property (it's an original piece of art!), and music publishing as the business that makes sure that songwriters get paid a fair compensation when their intellectual property is used by companies. Those companies could be record labels (mechanical royalties), radio stations, bars, and restaurants (performance royalties), or film studios and advertising agencies (sync license fees), and many more.