I haven't done this in a while, but a year or two ago I used to check out the live music radio stations around the country late at night on the iHeart app, usually after 10 or 11 PM Pacific Time. Most of them wouldn't have jocks on the air at the late or overnight hours, but would just be jukeboxes of music with sweepers (the produced voice elements ID-ing the station between the songs) and commercial breaks. What I found amusing was you could bop around several markets in the same time zones, particularly on Adult Contemporary, Hot AC, and Classic Hits stations and they would be playing IDENTICAL playlists with the same songs in the same order. Because some had longer breaks than others and they weren't lined up by exact time, there would be up to a five minute variance or so between the stations, but it was both amusing and sad because they weren't even trying to program uniquely anymore. Just send a signal to have all of the like-formatted stations play the same playlist. It might as well be a Carl's Jr/Hardee's franchise....different names on the door, but generally the same selection on the inside. I actually never checked an hour or two later in the Western markets to see if they were playing the same lists, but I would assume they were.