As part of an ambitious MOCA survey of the late Allan Kaprow, LACE hosts this short-run restaging of one of the artist's more traditionally formatted theatrical works. Originally unfurled at NYC's Reuben Gallery in 1959, 18 Happenings in 6 Parts is here recreated by sound-and-installation artist Steve Roden and a team of colleagues using Kaprow's notes and documentation. Involving scripted audience participation, the music of John Cage, and various visual elements, this seminal piece raised a new awareness of alternative conceptual art nearly 50 years ago. Needless to say, it's aged very well.