Tyler, the Creator on the left. Security on the right.

Last Thursday, the group’s leader Tyler, the Creator was swarmed at an autograph signing in Boston. On Monday, the group’s Detroit gig ended with bottles flying through the air.

But with the Rock & Roll Hotel heavily staffed with security on Wednesday, the controversial rap crew’s 80-plus minute set felt like tightly controlled chaos. The overwhelmingly young crowd moshed, crowd-surfed, threw beer and water — and a few unluckies were escorted out of the club. It felt unruly, but never unsafe. Let’s go to the tape...

9:38 p.m. — After returning to the stage after his first crowd-surfing ad­ven­ture of the evening, Tyler complains of getting beer sprayed in his eye.

9:49 p.m. — One fan stage dives and crowd-surfs during an extended silence between songs.

10:15 p.m. — Singer Frank Ocean performs “Novocaine,” but seems reluctant. “I don’t want to stop the moshing,” he confesses. A handful of females in the audience — the only females in the audience? — squeal.

10:36 p.m. — Tyler tells the crowd that he never imagined the group would have fans outside of its native California. A small pocket in the crowd begins to chant: “IN-TER-NET! IN-TER-NET!”