interesting...the video and audio look very very cool...
would have to see how it works before making a judgment....basically to my ears and many others, Pitch Correction is audible and basically sucks. It simply doesnt track with the nuances of the human voice... nothing has been down that is perfect...
so if this thing does work, it seems that there would be some artifacts noticable....or perhaps the actual qualities of an instrument, for example the open E on a guitar string couldnt be 'exactly' duplicated when you change the pitch of a barred F chord to an E a 1/2 step below it because the open E chord has specific harmonic resonances that only occur when that chord is strummed in that sequence...
as a general tool however, this is fantastic.
do we want "perfect" music? do we want sloppy bad musicians to be able to make 'perfect music'? I wouldnt unless its like electronica or dance or something repetitive like that which relys on perfection inherantly.... did a German invent this teutonic product? seems logical