barb x reader

AU
in an au barb managed to get all of the chords, she turned everyone into rock zombies and after a while they accepted it. the people of the chords decided to comply and be one with rock, in exchange for their leaders safety. but little did the rock nation know, there was a lost 7th nation. hidden deep within the lands, their own string, they're chord was special, a vibrant green. their music was mixed of pop,rock,funk,country, and classic. of all of the trolls to sing all together, they resided in the darkest parts of the forest, one day a troll managed to walk so long and so deep into the woods, they found themselves at your doorstep, this troll ran back and told queen barb, with this new information she thought that with a new string what other abilities can she unlock.