Since when does rock music include pedal steel guitar or banjo?
Since the very beginning, actually. Many of rock and roll’s 1950s trailblazers — Chuck Berry, Little Richard, Fats Domino — were raised on the Delta blues, gospel and boogie-woogie, and those genres were (and continue to be) the pervasive influences in the birth and evolution of rock. But a critical ingredient in rock’s recipe has always been country music. Rock pioneers like Jerry Lee Lewis, Elvis Presley, Buddy Holly and Gene Vincent came from eastern Louisiana, small-town Mississippi and the plains of West Texas, with a twang in their voices and lyrical tales of heartbreak and woe so typical of the country music genre.