who better to negotiate with the manager or agent (Concert Agency) to negotiate a better price DJ? and why?

Hi Anton, I’m not sure I completely understand your question. I’m assuming that you are talking about whether you should negotiate with the manager or official agent of a DJ for negotiating pricing. If the DJ has an official agent, then the agent is responsible for negotiating deals for the DJ that concern concerts. Usually if you try and speak with the manager about a booking, they will direct you to the agent or just forward your information to the agent. Also, some agents may become offended if you try and go around them and reach out to the manager, so not really the best route to take unless you already have a relationship with that manager.