The guru of Services Drafts Keith Copeland Authoritative Voice-Overs I have a full, deep and professional sounding voice. Many people, including attorneys that I have testified for as a forensic expert witness in court, have also commented that I have a very clear, cool and authoritative voice that really commands the attention of jurors. My voice is a good fit for promos, trailers, radio imaging, commercials, video games and narration. Work Terms I have a professionally equipped studio and can deliver most projects within 24-48 hours and have expertise in recording, editing, and post-production. The minimum charge for my services is $100.