If it weren’t for this music video (directed by Mark Kohr), there probably wouldn’t have been the success of the Offspring, Sum 41, or Blink-182. It encouraged a slew of youngsters to go out and get Fender Stratocasters (or knock-offs) and cover the darn thing with stickers. If it weren’t for Green Day, I probably wouldn’t have done the same thing as a young guitar player.
A chaconne is supposed to be a dance, right? Bach wrote those note values the way he wrote them for a reason. Did he really want performers to assign any length they felt like assigning them? My gut tells me that he didn’t. I suspect that he probably played his own music in tempo, maybe with some phrasing and ornamentation but still with a clearly recognizable beat. I imagine him gritting his teeth at the rubato that modern performers use. Maybe that’s just me projecting my own preferences, but this sense comes from listening to a lot of Bach and performing some, too.