I would like the wedding film to retain the original sound from [specific segments]. My music preference is [details or not yet decided]. Please confirm: 1. Which segments retain original sound and which use added music, and how can I approve any overlap? 2. Is the preview music the final choice, and who confirms it? 3. Which versions with original sound or added music will be delivered? 4. If the music needs changing, what choices, revision scope and charges are available? Please explain by segment.