An earthquake occurred near the country's Punggye-ri nuclear test site at around 10am on Wednesday.
Shortly after, state-run television announced a H bomb test had been a "complete success".
Earlier this year North Korea declared a "quasi-state of war" and said they were readying for battle against South Korea after the South accused Pyongyang of planting land mines that maimed two South Korean soldiers.
The South Korean military began relentlessly blasting K pop, weather forecasts and anti-North Korean propaganda through giant speakers across the border until talks took place in the demilitarised zone between the two countries.
But following the announcement that the secretive state had allegedly been detonating nuclear bombs their neighbours quite literally turned up the volume on their trolling efforts.
At midday on Friday (which also happened to be leader Kim Jon-un's birthday) South Korean troops fired up their sound system to play a bout of K pop.
While we cannot confirm the song choice, it probably sounded something like this...