When I am trying to lure someone to listen, this music is absolutely my last choice.
Actually, I remember well playing some Ligeti to a friend of mine who had no musical knowledge whatever and had no familiarity with any concert music. He was indignant - even angry - that he had never heard such music before, and was almost suggesting that these treasures had been hidden from him by some huge conspiracy.
Atmospheres, I'll bet..Ligiti is quite imaginative,and often accessable.. he did write movie music..
I have a freind who is just the opposite...he savors melody and structure..and dosen't get angry when I play something unique.