Britney Spears, Ryan Murphy and Heather Morris

Last week Britney Spears filmed some scenes for the "Britney/ Brittany" episode of the smash hit show "Glee". Ryan Murphy, the shows writer and creator said that there would have been less disruption on set if the president had called by.

He said "I couldn't get into my own sets at one point, which I thought was hilarious."

"It was literally like the President had come…We all had to wear wristbands. I couldn't get into my own sets at one point, which I thought was hilarious," he told E! Online.

The cast were spellbound in admirations. He said "I think she was really impressed about how so many kids of the show do what they do because they grew up wanting to be Britney Spears…She was really sweet with them. We had a number with a bunch of eight-year-old dancers in the show and she spent a lot of time talking to them, and they did the number for her ... She was so sweet, she's great with kids, she was so awesome."

Security on the set was especially tight as they are trying to keep a lid on what happens in the episode. However, Spears did tweet something that suggested she was playing a receptionist of some sort.

Spears is in the middle of preparing new material for another comeback at the end of the year. Murphy said "I got to hear some of the music she's putting out later this fall or early next year…It's really a great return to form for her; the songs are amazing so I feel she's riding the crest."