As host of last Sunday's Tony Awards, Hugh Jackman knows how to move a show along, whether on-camera or off.

During a commercial break at Sunday evening's ceremonies at Radio City Music Hall, he strolled onto the stage singing "Oh, What a Beautiful Morning," which he previously performed as Curly in a revival of Oklahoma!

He invited the audience to join him in a sing-along, but not everyone knew the lyrics - including Sean Combs, who was sitting in the front row. So Jackman invited the hip-hop impresario onstage to learn the song. "I'll sing the first verse and you follow me," Jackman said.

The 35-year-old actor also was a Tony winner Sunday night for the musical The Boy from Oz, in which he stars as singer-songwriter Peter Allen.