Mark the calendar for the April 19 Tribeca Film Festival premiere of Keep On Keepin’ On, the Al Hicks-directed documentary about 23-year-old blind piano prodigy Justin Kauflin, who is helped over his terrible stage fright by his ailing mentor, jazz legend Clark Terry. Terry was Quincy Jones’ first teacher and mentor to Miles Davis. As they prepared for an elite international competition, the 89-year-old Terry saw his sight and then his health fail. While he is one of few to have played in the orchestras of Count Basie and Duke Ellington and later broke the color barrier as first African-American staff musician on NBC’s Tonight Show, the most important thing to Terry was hanging in to see Kauflin realize his dream and play his best at the competition. Jones produced with Paula DuPre’ Pesmen, latter of whom was behind the Academy Award-winning The Cove and Chasing Ice. After the festival premiere, the subjects will be there for a Q&A followed with a performance by Herbie Hancock, Esperanza Spalding, Dianne Reeves, Roy Hargrove and Kauflin, who’ll follow his star docu turn by tinkling the ivories. The performance is also being produced by Jones.