Metallica played their coldest -- and quietest -- concert ever this week when they became the first band to perform on all seven continents with a unique set in Antarctica.

The Dec. 8 show took place near a heliport at the Argentinean Carlini Research Base on King George Island. The 10-song set -- presented by Coke Zero -- was staged inside a small dome to protect the crowd from harsh winds and snow.

The audience of just over 100 included scientists from around the world and 19 winners of a Coke Zero contest in Argentina, Chile, Colombia, Costa Rica and Mexico. Fans could enter by sharing, on the brand's Twitter page, what they'd be willing to do to join the once-in-a-lifetime expedition.

The lucky winners boarded a specially equipped cruise ship in Tierra del Fuego and, after taking in the scenic landscape and learning from the researchers, reached the frozen continent a few days later.

To meet international Antarctic protocol to preserve the fragile environment, Metallica played the hour-long show without traditional amplification. The audio was transmitted to the audience through headphones.

"This was the most unique show Metallica has ever done," the band wrote on its Facebook page. "The energy in the little dome was amazing! Words cannot describe how happy everyone was."

The show also was streamed live in Latin American via and Coke Zero will donate equipment for a new laboratory at the Carlini base, which focuses on scientific investigations and international cooperation.

Watch a pre-expedition interview with the band: