BU Events Calendar Opera (April 30 through June 30) Tuesday, April 30 7:30 PM MAINSTAGE OPERA: The Cunning Little Vixen by Leoš Janáček Wednesday, May 1 7:30 PM MAINSTAGE OPERA: The Cunning Little Vixen by Leoš Janáček Thursday, May 2 7:30 PM MAINSTAGE OPERA: The Cunning Little Vixen by Leoš Janáček