The excellent Alex Ross of The New Yorker and his own www.therestisnoise.com has this to say, and back in 2001 wrote this appreciation of the Big Yyn.
Lest Ligeti be thought some dismal gloom-monging melodyphobe (although heaven only knows - now - how much he'd seen to be gloomy about), check out his amazing Concert Romanesc, abundance of energy, humour and delight composer's own.
A propos of absolutely nothing, Sir Harrison Birtwhistle's comments at the Ivor Novello awards:
"Why is your music so effing loud? You must all be brain-dead. Maybe you are. I didn’t know so many clichés existed until the last half-hour. Have fun. Goodbye."