“Pitch Perfect 2,” a musical comedy about an all-female a cappella, singing group, dominated the weekend box office, taking in more than $70 million from its debut, the Los Angeles Times reports. “Mad Max: Fury Road” was left in the dust, grossing $44.4 million. The Disney/Marvel movie, “Avengers: Age of Ultron” took the No. 3 spot, grossing $38.8 million over the weekend and $372.2 million in overall domestic ticket sales since its release.