Visible crew/equipment: During the Finals of the International Championships at the end of the movie. Beca is singing "Don't you forget about me" the camera cuts to Jesse sitting in the crowd with Donald sitting next to him, in a few of these shots, you can see crew in the reflection off Donald's glasses and an empty stage.
Visible crew/equipment: When the girls are singing the Miley Cyrus song in the bus, the camera switches to an outside shot of the bus. The silhouette of the camera is reflecting in the left window.
Answer: It wasn't just that she sang a song he likes, she sang arguably the most well-known song from his favorite film in front of a huge crowd of people. It was a public, heartfelt apology rather than the abrupt, private apology she gave earlier.
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