Who was the first person to combine folk and rock?

How do you get 1000000 robux for free? The following sentences contain one homonym from a pair of homonyms. Which of the sentences below uses the correct homonym for the context? How many phonemes in the word flax? Which of the following is not an issue that President Obama has tried to correct? What continent is 40 north and 90 east? How many phonemes are in the word quit? When is your uncle's sister not your aunt? What's something you've always wanted to learn? Where did the Battle of Puebla take place? In regard to RACE is it more important to try to extinguish a fire than it is to warn people? What city is located at 36N 140E? To which category does this country most likely belong? The Giver ages 1-12? Two neighboring farmers are having an argument. Farmer A claims that he should be given half of Farmer B's land. Furthermore if he doesn't get it he'll burn down all of Farmer B's crops! Not wanting t? What two state capitals are located on the 45 degrees north parallel of latitude? What of these pairs of cites is not like the others? What city is located at 43N and 87W? How many cups is 600ml of water? How many phonemes in the word 'splash'? How much did it cost for 1 dozen of donuts in 1970?

Who was the first person to combine folk and rock?