THE STUNNING SCHEDULE of events for Hermann Nitsch’s Six-Day-Play, a happening held last August at his Schloss, in Prinzendorf, Austria, reads like a cross between death-metal theatrics and harmonic-convergence hippiedom. The day begins, “5:32 AM: Sunrise. Slaughter and disembowelment of a bull.” This kicks off a tight lineup: Primal Excess, Primal Beginnings, Matricide, Patricide, Fratricide, the Murder on the Cross, and the Fall. There’s a lunch breaknothing like fratricide to work up an appetitefollowed by “Partial mounting of the mythical leitmotif,” with a unison hooting of all