Yeah, pretty hilarious:
http://www.pspfanboy.com/2007/04/11/psa-dj-max-demo-killed-psp/
And i do know that this demo IS hard ... i dled it and tried it (still waiting for my full game to arrive in mail)
However i've seen songs from the original game and the sequal that look quite easier than that demo song, i guess they went over board with trying to balance the demo challenge :)
http://www.youtube.com/watch?v=z3pQBKoCfc4 (Easy Mode on DJ Max Portable One's Oblivion)
Pretty amusing that he reached that level of frustration, no game is worth that destruction...
When they are talking about Joystiq's Jared Rea thier talking about this: