Police were called to break up a 'fully-fledged' drum and bass rave on the Bakerloo line on Monday night which featured lighting rig, MC and PA system.
Well - not everyone thought so, namely people who the sesh disturbed, like Elyse who tweeted: "Hi Dominic, @bakerlooline can you please let me know why there's some live rap performance holding up trains and keeping me from my PJs?
What a snore.
The action was captured on camera by a raver who later uploaded the above video to YouTube writing: "Not your normal Monday night on the Bakerloo line."
The MC on the mic was Harry Shotta, who you may recognise from a recent and particularly cringing Arsenal charity rap single titled, 'Clash of the season'.
The British Transport Police took the incident in good spirits when they boarded at Regent's Park to shut the party down.
A spokesperson for BTP said: "Whilst officers relish any opportunity to experience underground drum and bass, we'd kindly ask DJs to refrain from using the Tube as a pop-up club."
"It may be the Easter holiday but there is a time and a place and we'd ask everyone to consider other passengers using the network."
Not their first rave, I'll tell you that for free.