extraneous sounds

There have long been rumors that techno producers put in subliminal frequencies that mimick common cellphone rings, in order to make people sit up and listen, but I always figured that would bring people OUT of whatever zone it was they were in, in which case it's a brilliantly Brechtian strategem, but more likely it's just the frothing talk of 19-year-old speed freaks convinced that the lighting guy is releasing "poppers" into the air with every dry-ice blast. If any of that were actually true I have to imagine "Last Night a DJ Saved My Life" would be the granddaddy of this technique?

Yeah, in the depth's of my honesty i'd have to say that i'd never say this is something to do with the actual/conscious production of the music... perhaps this belongs on ILE as i'm inciting more of a dicussion on conditioned responses, however vague their prompting may be - oh triteness...