Thanks for the reminder.
I've now watched the film. All rather humbling.
Also, very much a stark contrast with another doco that I watched recently from the BBC:
Imagine... S21E07 Jimi Hendrix: Hear My Train A Comin'
Hendrix was also an introvert (although you wouldn't think so from his stage craft) but tracked a very different path. The intriguing similarity was that they both first "made it" outside the US. How nuts is that?