Going through the CDs I got on Freecycle, I came across several various artists compilations with the word "Trance" in the title. Eventually I realized (and my sister-in-law confirmed), that "Trance" is a genre of music. Of course, I am behind the times, having now learned the Trance developed in the 1990s,so it's not exactly new.
At any rate, I don't like it. I find the sound annoying, and vaguely discomforting. Listening to it, I envision a club full of twenty-somethings doing ecstacy. Alternatively, it reminds me of any number of stores I've been in -- record stores, trendy clothing stores, skateboard shops -- that play the music in the background because studies have shown that people listening to it will buy more stuff.