I started to really notice this back in 2006 when I ran a club. It seems some people 'in charge' of production go absolutely crazy if the Jukebox or stereo isn't on immediately upon the band last note. I wonder what they think is going to happen without annoying background noise for a few minutes. I am at some shows where the break music is almost as loud as the bands. I prefer a little aural downtime between acts. Anyone else?