After a relatively low-key decade and a half working in sideman capacities for artists ranging from Ryan Adams to Snoop Dogg, Kamasi Washington jolted normally jazz-averse listeners awake with 2015’s The Epic, a triple album that led to the Los Angeles tenor saxophonist, bandleader, and composer being compared to spiritual-jazz greats of the late ’60s and early ’70s. Washington’s ambition hasn’t wavered in the slightest. Following last year’s Harmony of Difference EP, plus contributions to records by Kendrick Lamar and Run the Jewels, he and his usual supporting cast (including trombonist Ryan Porter, bassist Miles Mosley, and drummer Ronald Bruner Jr.) delivered another colossal statement with the two-and-a-half-hour Heaven and Earth. It’s all made Washington the obvious leader of contemporary jazz and, almost exactly a year after his excellent First Avenue show, the reopened Palace Theatre’s second-ever jazz headliner. With Butcher Brown.