listen to this video http://www.youtube.com/watch?v=uJvucBDevyw there is an introduction. it is important to my point. notice how a simple repetitive sound is on its own is unsubstantiated but when mixed with free notes of the second hand makes an entrancing sound. neither sound on their own produces the outcome however when repetition and a different tune play they act in an odd way. what causes humans to be entranced by this form of music? why does it appeal to us? why does repetition have such a draw and have the ability to work so well with flowing melody? and most importantly why does it has this affect? especially in a uniform way? don't all people get drawn into a beat and have the ability to follow it and at time get encouraged to react in a certain way, i.e. the urge to move e.g. dance. it is not something that has been given by evolution it has no use or help to interact with the environment it is pleasure for the point of pleasure. is this a gift from god to be able to have pleasure in this way? what other reason can enable people to feel joy from something that benefits them in no way and offers them nothing but the sound in itself? i have no emotional attachment or memory when i hear it but it entertains me. what do you think?