» Mon Jul 26, 2010 3:01 am
From what I can tell, the development of popular music is generally about a focus on a small set of elements that seem to slowly change as time goes on. The basic 3 minute-ish verse/chorus focused song format seems to remain fairly stable, and then other elements are generally overlaid onto it. Different genres will have different elements of tonality (though not much different), instrumentation, timbral palette, lyrical themes, etc. It seems to me like the most important element that defines genres of popular music is the instrumentation/timbre, which is highly tied into current technology. This ties in well to the idea of popular music being a mass-produced commodity of sorts. Also to be considered is the way certain elements will fall out of style and then return in a new context, and also the overt fetishization of older styles that occurs in revivals of "retro" styles.
But yeah, what defines 80's music, for example? A lot of the musical ideas are ones familiar to older pop music, and some familiar to today's pop, but the salient elements to my ears are the timbral elements of the day's prevailing technology: solid state amplifiers (JC-120 especially), FM synthesizers (DX-7 was popular), drum machines (808), "gated" drum production, (as popularized by ex-Genesis compatriots Phil Collins and Peter Gabriel).