AURELION SOL EASTER EGG?!?!? (Aurelion Sol's voice heard at the begining and end of ARAM game)

So i was playing Nami and at the begining of the game I heard Aurelion Sol saying something (I can't remember). Then at the end he said (paraphrasing) "Nice you've survived a team that's simply mediocre". I asked my team if they heard anything and they were just like WTF are you smoking? Did i just trigger some sort of Aurelion easter egg? I can't find anything on youtube.