[Senator Clay Davis]

^If any genre is gonna be dead in 20 years it'll be rock music. Since 2001 there's been exactly 2 "rock" songs that have gotten to #1, and I have to put rock in quotations because the two songs that qualify are "Hey There Delilah" by the Plain White T's and "We Are Young" by fun, both utterly awful and not even close to rock music (their only claim to being "rock" is using guitars...). Rap meanwhile has probably had more than 50 #1 singles in the same time frame. So no, rap will still be here in 20 years. Most likely so will rock, but rap is much more likely to be relevant in mainstream music than rock.