After 18 weeks climbing the Billboard charts, Wiz Khalifa’s ode to Pittsburgh ‘Black and Yellow’ has settled in at the number one spot on the US Hot 100.

The 23-year-old rapper expressed surprise at the revelation, telling Billboard.com: "It feels amazing. Everybody that makes music wants to be in this position. I'm pretty level-headed about everything but... I did a little dance."

The colour coded title refers to football team the Pittsburgh Steelers who unfortunately were defeated in the Super Bowl last Sunday (February 6) by the Green Bay Packers – "You win some, you lose some," was Khalifa’s reaction.

It was a complete surprise," says Khalifa. "It being a song about Pittsburgh, I thought it would just be a great introduction. I never imagined this."

Check out the video for 'Black and Yellow' below: