By Philip Booth Would it be overpraising Tom Harrell to describe his long recording career as practically peerless? Album after album, sometimes year after year, the Midwest-bred trumpet and flugelhorn virtuoso—leading quartets, quintets, and sometimes even chamber orchestras—has continued to release surprising new music. At 76, he’s still unearthing fresh sounds while digging deep into the jazz tradition, simultaneously referencing the brass players and bandleaders who preceded him and pointing to something new. Oak Tree is yet another keeper. Joined by longtime bandmates Ugonna Okegwo on bas…