To announce a release, the message must contain at minimum these informations :
Artist - album title - genre (hip-hop, rock, folk,...) - release date - label - link
Not required but recommanded :
url to image - country (if not mentionned, i'll put it fot all country) - type (vynil, digital, cd...Cd by default) - commercial or free (commercial by default) - url to multimedia - tracklist
Not required :
description