Vision External seems destined to be remembered as the unofficial debut showcase of Isaiah Petrie. The young vibraphonist is a rising star in Kansas City’s music community. Petrie, saxophonist Dougan Smith, bassist Nsikoh Bebe Lala and drummer Jaylen Ward comprise the un-Googleable ensemble The DJ Quartet on Vision External. Petrie stands out, but each member of the group contributes to the vigorous post-bop of tracks including "The Call". Even as it maintains convention, the DJ Quartet brings refreshing vitality to Kansas City’s mainstream jazz scene.