A book your reading someone elses story with effort through purposeful information and back story imbedded. It consumes greater time and like life has longer periods of less excitement.
Music is easily transformative to sharing that emotion and or tying it to a period or incident relevent to the individuals listening. Simply easier to relate it's emotion consiously and subcounciously as if our own. Like a drug it seems to quickly swing a mood around, your energy and in best case scenarios...embelishes an already natural high...
I find a book is an escape from ourselves where a song is often in the context older songs , like comfort food for the soul. New music before it ages is a necassary drug to keep moving forward ....
Music is instant gratification in short fleeting moments with less of the malaise of life and books have inherently within them.
Its not that surprising. Read a good book about your favorite band ...or...put a soundtrack to it and see them live with a few friends and thousands of strangers..now it's imbedded in you... short in duration so potent with emotion and energy...like many of the best things in life...