I had the pleasure of working with Mark on a series of training videos, and his outstanding narration greatly enhanced my production. Mark was quick to understand the tone of the videos and did a fantastic job of matching the sync of my temporary VO. Matching the temp track was especially critical for this project and saved me from having to recreate time-consuming animation elements. I have been working with professional voiceover artists for more than 20 years and my experience with Mark ranks as one of the smoothest and most rewarding. I recommend Mark without reservation and look forward to working with him extensively in the future.