He’s a 23-year-old blind jazz piano prodigy. He’s an 89-year-old legend who has trained or mentored such greats as Miles Davis and Quincy Jones. Keep On Keepin’ On is the story of the unlikely transgenerational bond they form and the challenges each faces as the cameras roll. Justin Kauflin has fingers of fire but crippling stage fright, and if he’s going to do well in an international competition, he’s going to need all the help he can get from Clark Terry — who played in Count Basie’s and Duke Ellington’s bands. The documentary from rookie director Al Hicks won the Audience Award at Tribeca, where Radius-TWC acquired it for worldwide distribution and a potential remake. The pic opens September 19 in LA and October 3 in NYC.