The celebrity judges don't come into play until the songs are whittled way down (at least that is what I have heard). So in the first round maybe all of the songs are listened to by staff (maybe 30 seconds a song, maybe more) to weed out the first 90%. Heck the celebrity judges might only hear 20-50 songs (I am just guessing, though).

Now at bandcamp: Crows Say Vee-Eh @ bandcamp or soundcloud: Kevin @ soundcloud