The final album by West Coast pianist and composer Horace Tapscott is one of sublime gentility, reaching harmonic elegance and meditative grace. Accompanied by Billy Hart on drums and bassist Ray Drummond, Tapscott moves through five compositions by others - including Charlie Parker's "Now's the Time"; Sonny Rollins' "Oleo"; and Gig Gryce's "Social Call," as well as Thurman Greene's "Lullaby in Black" - and adds four of his own to a set that is unusually devoid of odd time signatures and floating rhythmic techniques. There is a gorgeous waltz in "As a Child" that is big on rigorous attention to harmonic detail and not lilting danceability. Also, during the title track, Hart and Drummond move the four-four time signature into reversals of two-four or six-four and accent the living hell out of every turnaround in the score…