Worth 81 minutes of any music-lover’s time. In my opinion. A strange, very intense and incredibly driven individual, absolutely crammed full of talent. Loads of good intelligent interview footage with Jarrett himself and his musical collaborators, plus plenty of performance footage. Best music documentary I’ve seen in ages.
https://www.bbc.co.uk/iplayer/episode/m0011f4y/keith-jarrett-the-art-of-improvisation