8:30 p.m. , Context Studios , 1 North 12th Street , Williamsburg , Brooklyn , ( 212 ) 674-8194 , www.contextnyc.com ; $ 12 -LRB- La Rocco -RRB- JUILLIARD DANCE ENSEMBLE -LRB- Tonight through Sunday -RRB- Eliot Feld 's new '' Sir Isaac 's Apples , '' set to Steve Reich 's '' Drumming '' performed live , is billed as another of Mr. Feld 's '' ramp dances . ''