The harp has a slender presence in the jazz canon. But if a bass can be plucked pizzicato-style to make solos, then why not an instrument with nearly four dozen strings? After proving that she could play classic bebop on her axe, Dorothy Ashby tacked toward fusion with this late-’60s release. Swirling orchestral arrangements and additional soloing instruments (like the flute on “Action Line”) contribute to the chill mood. But the focus is on Ashby’s sterling technique, as showcased in the title track’s shimmering solo.