Interim vampires revel in Longwood darkness

A self-acknowledged vampire – at least temporarily – captivated a capacity crowd at Longwood Gardens on Friday, Aug. 12. Ricardo Rivera, the creator of “Nightscape: A Light and Sound Experience,” debuted this year’s “Artist & Friends” series, a panel discussion designed to complement the innovative light and sound exhibit. He appeared with Thom Roland, a colleague at Klip Collective, a Philadelphia-based experiential art shop that…