Finding a Documentary with a Transcript
It seems the videos I've suggested so far don't have transcripts.
Let me try a different approach: I can suggest a search term for you to find a documentary on the Bee Gees with a transcript.
Try searching for "Bee Gees documentary with transcript" or "Bee Gees interview with subtitles" on YouTube.
Alternatively, you can also check the official YouTube channels of music documentary producers, such as BBC, PBS, or CNN, as they often provide transcripts for their videos.