It's been a while since we've reported on the Harp Twins, the identical twin duo of Camille and Kennerly who have done dazzling renditions of metal classics from bands like Metallica, Nightwish and Megadeth. Now they're back with another all-time classic: Iron Maiden's "The Trooper."

The two perform with silver harps strapped to their waists, wearing matching outfits as they fittingly pick a graveyard as the setting for one of metal's greatest war songs. Maiden's Piece of Mind hit is typically a hard-charging track, backed by triumphant, galloping bass lines, with Bruce Dickinson's emotional vocal delivery and blistering solo trade-offs, but here it is transformed into a calming and downright beautiful tune.

Cammille and Kennerly don't perform "The Trooper" note-for-note with the original, choosing to give it their own spin on the harps, incorporating moments of the guitar solo, washed away by a fluttery strum of the strings, truly giving the song a new life on the ancient instrument. The adaptation works marvelously, giving a Renaissance quality to the song; an era which metal has always seemingly had an affinity for.

"The Trooper" was inspired by the Charge of the Light Brigade at the Battle of Balaclava in 1854 during the Crimean War. The song depicts massive loss of life, which stemmed from 600 British cavalry charging Russian artillery after a misunderstood order from the commanding British officer Lord Raglan. When the band performs the song live, Dickinson wears an authentic red coat uniform (like the one the mascot Eddie wears on the single artwork) and waves a Union Jack flag throughout the song. Upon its release, the song peaked at No. 12 on the U.K. charts.

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