Final answer:
The specific act credited with starting rock and roll in Japan is not defined, but rock and roll's popularity globally, including Japan, was influenced by artists like Elvis Presley and Bill Haley and His Comets. It integrated with local musical culture to form Japanese rock.
Step-by-step explanation:
The act that is credited with starting the rock and roll movement in Japan is not explicitly identified in the provided reference material. However, the global influence of rock and roll was undeniable, and artists like Elvis Presley and Bill Haley and His Comets played pivotal roles in popularizing this genre, altering musical tastes across various cultures, including Japan. The movement in Japan, as elsewhere, likely stemmed from a mixture of local influences and the adaptation of the sounds and styles that originated from African American musicians and were then popularized by artists in the United States.
In Japan, the rock and roll genre would have blended with the local musical landscape to create a unique Japanese rock phenomenon. As seen in other areas of the world, this led to a cultural exchange and shift that integrated Western rock and roll elements with traditional Japanese music, resulting in a new and distinct sound.
It's important to note that rock and roll played a role in blurring racial lines and led to advancements in ending certain types of segregation across the nation. This genre, growing from African American rhythm and blues, brought communities together and influenced social change in the 1950s, a narrative that resonated around the world, including in Japan.