On his third album, trombonist Ryan Porter brings his melodic and groove instincts more clearly into focus while further documenting the history of the West Coast Get Down, the close-knit collective best known for its work with tenor saxophonist Kamasi Washington. Porter’s trombone, an essential ingredient in Washington’s music, becomes the lead voice here, and the roles are reversed: Washington takes on something of a support role, though his tenor (and soprano on “Mesosphere”) is still prominently featured. The material, recorded over a period of years, boasts keyboards from Cameron Graves and Brandon Coleman—a modern and richly layered sound that Washington’s fans will find familiar. We also hear the solid, versatile groove of drummer Tony Austin and the fat upright bass tone of Miles Mosley (whose “World on Wheels” wah-wah solo is a standout, though Thundercat’s electric bass feature on “Carriacou” shouldn’t be missed). Porter is a fluid and expressive soloist throughout, and his warm blend with Washington on the harmonized themes—sometimes thickened by trumpeters Josef Leimberg or Jumaane Smith—remains a compelling signature sound.