Aeon Magazine just released an article on the role of repetition in music. I haven’t quite read it all yet, but I gotta believe our love for repetition in music comes down to simply knowing the next note, especially when dancing.
I’ve given a lot of shit to musicians that make their music too repetitious, but if you’re talking about a melody so catchy repetition is exactly what it needs. I play songs over & over again and isn’t that really the same thing just on a slightly larger scale?
In the article, they also give an example for you to test out yourself. Check out the two sound bites sequentially and see if a regular sentence can turn into a chorus (though not the best you’ve ever heard).
Check out my personal pick on repetition. You could almost pick out any, but this is been on my repetition for days (on weeks).