If you saw Andy Goldsworthy’s show at the Frist Center in 2002, you probably remember that exhibition’s focus on photography. But the real meat of Goldsworthy’s oeuvre can be found in the fleeting, site-specific landscape installations he creates with improvised and found tools. One example might be the stems of a selection of autumn leaves that Goldsworthy tied together, resulting in a multicolored serpent of a vessel that he sent floating down a shimmering stream. Others include challenging sculptures the artist has created out of snow or ice. My favorite works of Goldsworthy’s are those non-permanent installations that exist for just minutes or hours before melting, rotting or simply falling apart. Of course, this is where those photographs come in handy. In parallel programming with their current exhibition of photographer Edward Burtynsky’s industrial landscapes, the Frist’s screening of Rivers and Tides: Andy Goldsworthy Working With Time is as close as most of us will get to sharing a moment with one of the artist’s ephemeral installations. Thomas Riedelsheimer, the film’s director, also takes credit for the inspired cinematography here. His film shines a spotlight on Goldsworthy’s often athletic process, and the many beautifully shot scenes are accompanied by the artist’s consistently compelling philosophizing about art, nature, place and time.