NOTE: Before anybody gets angry about the lack of a 'proper' HLG spot, me and my friend chose to hide where we did for fun. YouTube - HLG on Sword Base
HLG stands for Hidden League Gaming, or Hiding Little Girls, which ever you prefer I guess. Anyway, yes, the song is by Justice, it's called Waters of Nazareth (Erol Alkan Remix). Also, I'm about to post a new thread containing, a 'proper' HLG spot on Boardwalk which I managed to hide in the other day, so check that out if you want.