There's no question that a voiceover demo is your calling card. Talent agencies and production companies will always ask for one when you make inquiries about being considered for rosters and jobs.
What is equally important is making sure your demo has original content on it. Scripts written by a professional copywriter and tailored to your range and skillset. You don't want to be using free scripts that you find on the Internet. For example, Edge Studios has a free script library. These particular scripts are fun to practice but they are severely outdated and should never be used on a professional demo. In fact, I've seen other coaching companies use those for their own demos. Not good! Talent agents will be able to