Didn't want to derail the thread of my robot brother, but he was discussing people's ability to like music being related to if they can "feel" it... causing for the debate of odd timed beats to be the downfall of a "pop" song, because most people wouldn't get it... I give you... Tool. A majority of the band Tool's music is odd timed, but in the realm of rock, they are the poppest band since Metallica. (Lets remeber folks, pop means popular... not Dance music). I was listening to Tool the other day (I'm trying to get into them so I can have something to talk about with my friends... that's all they talk about, a band that has put out 4 albums....) but what I've noticed in my listening, when something becomes complex... something or usually everything else simplifies. It's quite rare in a Tool song that more than two or more people are doing anything complex really. More often than not, the drums are the only thing overly technical. So to cut to the chase, I think it's density that causes people to dislike something. AC/DC is the biggest crossover rock act ever, they appeal to basically everyone.. and I struggle to think of a simpler tighter band. Not only is it very monophonic, but the tracks are a bit more sparce in terms of production, everything is nice and clean and has it's own space. Lets check the other end of the rock spectrum. Lets take an extreme death metal band like Cryptopsy or Nile or someone of that nature... so much going on, the music is in a constant state of activity. It's all about creating this uneasy feeling of jumping out of your skin, odd timed disjointed whatever. (Ignoring the Death metal vocals, because people always point to the vocals for causing death metals lack of mainstream popularity, I think that's scratching the surface). My thoughts on the subject are clearly unorganized, I'll try to summarize by saying, people like simple/sparce music. I'm not sure why, people don't like a lot of activity in their music (people meaning the average moron ). But strangly enough, minimalist ambient music isn't popular either. It's non abrasive and nobody would complain if you put a Brian Eno cd on as background music, but people don't rush out and buy his stuff. I just think that it's interesting, the perfect pop music is somewhere between brutal technical thrash death metal and someone holding down a "d" on a keyboard.