Needless to say, the effect was very obnoxious, and enjoyable.
One of the characteristics of sound reproduction is that the combination of loudspeakers and acoustic cavities, such as a pair of headphones or an amphitheater, is that there will be a number of frequencies with much higher responses than others. A sound engineer attempting to accurately reproduce recorded sound will try and counteract these effects, but this process is very time consuming and difficult to accomplish for either every seat in an auditorium or every pair of headphones that could be plugged into an mp3 player. As a result, much of what a typical person hears in their lifetime is colored by the speakers and headphones that they happen to be listening to. It's not implausible to think that this has a significant effect on the music that we gravitate to, and could go a long way to explaining why a song you enjoy very much on your headphones your friends might not. You may have just found a song with particularly nice resonances for the speakers in your car.
One of the unique joys of live music, particularly live vocal performances, is that singers and musicians will naturally tend to gravitate towards the resonant frequencies of the spaces they're performing in, thus adapting their songs to the place they happen to be in. Even as a fan of EDM, I can see plenty of work ahead for the genre as it tries to use technology to create a more unique performance at each appearance.
