Beyonce took the interactive vibe of “Fuerza Bruta: Look Up” to heart Saturday night, trying to learn the choreography during the high-energy dance spectacle’s “murga” section, where dancers stomp on large platforms. And when a large piece of silver material was pulled over the heads of the audience, the singer gleefully ran under it, mingling with the performers and fellow show-goers. Our spies said Beyoncé’s more sedate hubby, Jay-Z, smiled throughout the show but didn’t try to get in on the act.