If one is doing a CD/Album, is there a theme they are sticking to? If it's just a style or tempo change they are looking for (to show the artist's versatility), then maybe there are staffers that do the initial sorting and forward to the producer. I'll bet the producer only listens to a couple verses and then passes or fails based on 'do they want to hear more' and get hooked. CM is noted for digesting large quantities of material and I would expect the 'decision makers' to have a streamlined way to quick-sort through material and minimize the time they spend.