Boston University students were the "Opposite of Adults" on Friday night.

About 1,500 students gathered at Metcalf Hall and danced all night to alternative rap group Chiddy Bang's electronic beats.

The concert was organized and hosted by BU Central Managers Amanda DoAmaral, a School of Education junior, and Rose Milgrom, a College of Communication junior.

"Basically, he was one of the first people we thought of for the summer," DoAmaral said

BU Central contacted Chiddy Bang's agent last year in order to book the group, which wasn't as prominent an artist back then, she said.

Chiddy Bang, composed of rapper Chidera "Chiddy" Anamege and producer/drummer Xaphoon Jones, got their start at Drexel University in Philadelphia, Pennsylvania.

"We tend to get more underground artists," DoAmaral said. "We got lucky."

After releasing a mix entitled "The Swelly Express" on their MySpace page, Chiddy Bang was signed by EMI/Parlophone Records in March 2010, according to the EMI website.

The group's first single, "Opposite of Adults," debuted at number 12 on the United Kingdom pop charts last February, the website said. The group's tracks sample songs by other indie/electronica artists, such as MGMT and Passion Pit.

Although the concert was originally set to take place in BU Central, it was soon rescheduled for the Metcalf Ballroom because of the overwhelming response from students.

BU Central only has a capacity of about 300 people, but the Facebook event had a 1,500 person response, DoAmaral said.

The first 300 people in line for the show received orange wristbands allowing them entrance to an after party downstairs in BU Central, where Xaphoon Jones of Chiddy Bang performed an exclusive set.

Students lined up for the concert in and around the George Sherman Union as early as 5 p.m., about three hours before the show's start time.

Security was heightened at the GSU, with officers dividing men and women into two separate lines. Men received pat-downs to check for weapons, while women had their bags searched.

College of Arts and Sciences freshman Christine Moyer said she was annoyed with the line to get into the concert.

"The wait kind of wore us out," she said.

Peter Levine, a College of Fine Arts sophomore, said he was a little disappointed with the atmosphere of the show.

"The crowd [was] a little icy," he said.

However, Levine said he appreciated the fact that students showed up to support their school.

During a set break, Chiddy took random topic suggestions for raps from students, including the Renaissance and the Taj Mahal, and free-styled a rap on the spot.

"I like that they mix the rap element [with electronica]," COM sophomore Roneil Smith said. "It's energetic."