Add new audio to beginning of completed imovie project

[Frederickgolf]

I have an iMovie project that I would like to add an audio clip to at the beginning of the project(before the video starts).
I am using iMovie 10

Is this possible?

[october262]

I have an iMovie project that I would like to add an audio clip to at the beginning of the project(before the video starts).
I am using iMovie 10

Is this possible?

see here - https://support.apple.com/en-us/HT210831

[Frederickgolf]

Unfortunately, that link doesn't answer my question. I want to add music before the video clip(project) starts. In other words not synced to the video rather before the video.