I also very much agree with Luigi, different styles come and go every few years but basically every style of popular music owes a great debt to the blues, Rock,Soul,R&B,Reggae,Hip Hop,Rap,Thrash Metal, Speed Metal,Punk,Grunge,Jazz, you name it, we can trace it all the way back to the blues, from Robert Johnson through Muddy Waters and John Lee Hooker, from Chuck Berry down to Jimmy Page, Marvin Gaye we're still playing around with a basic musical format. Thank you WC Handy for giving us all this.