Will.I.Am had a great time playing alongside Usher and putting on an exciting show during Super Bowl halftime in Las Vegas on Sunday.

The former Black Eyed Peas member was invited to perform “OMG,” which he composed and produced with Usher. This was also a complete circle event, as Usher had played at the Black Eyed Peas’ Super Bowl halftime concert in 2011.

“How can I explain it? There’s no words to really explain that,” Will.I.Am told The Hollywood Reporter after the performance. “Now 13 years later, it means something totally different. It’s beautiful. It was wonderful. It’s fantastic.”

For their concert, Usher performed the song on roller skates. “The reason I say our section was the most ‘What the F’ is because we’ve never seen roller skating at any type of big world stage like that,” Will.I.Am told the crowd.

“It felt like the urban Olympics. He brought the urban Olympics to the Super Bowl.”

He added, “There were a lot of OMG moments in the show. There were so many OMG moments that 60 seconds of ‘OMG’ was all you needed because the show was ‘oh my gosh.’”

When questioned about his favourite memory aside from what they had said, he laughed and stated, “That one time when he was chest bare onstage. “That was crazy.”