Identify the origins of rock-and-roll music and one important figure in the early development of the genre

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Rock and Roll born in the middle of XX century. The genre is a result of african-american and gospel music mix. An important figure to this genre is Chuck Berry, that used the two-note lead line of jump blues piano and transposed it to the eletric guitar.

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That she is possessed and needs a priest

Because it’s red and red is fire and fire is hot