Where jazz is concerned, the 2010s could be divided almost precisely in half: BK (Before Kamasi) and AK (After Kamasi). The burly LA saxophonist's triple album, The Epic, was released on May 5, 2015, almost exactly at the decade's midpoint, and it changed everything. Not because he inspired a slew of imitators, but because all of a sudden people were paying attention to the genre in a way they hadn’t before. In the years that followed, his audience grew like a tumor -- his August 2015 New York debut was at the Blue Note, a club that holds fewer than 200 people, and less than three years later, in June 2018, I saw him open for alt-j at Forest Hills Stadium in Queens.