An EPK is your online media/marketing portfolio. Most booking agents, venues, labels, media outlets, etc are crazy busy and get 500+ emails a day. The notion of “attaching” files, especially large size image or sound files has become redundant – now the preferences are for embedded links to an online collection of “assets”. This one link should include access to everything that anyone might need when examining your work: music & web/social media links, bio and/or media release (presser), a range of photos, reviews, any online retail and show information.