A huge amount of music, just look at your Spotify lists and see the number of massively popular tracks marked as "explicit", and I am not talking about smut like Ivor Biggun or gratuitous swearing, this is mainstream rock with the occasional F***k, if you want to hear the difference just listen to the rock output of Dutch stations like Pinguin Radio or Kink FM, Caroline can't even play the some of the latest Sparks or Lana Del Rey due to the ridiculous OfCom regs.