After they finished recording the song, Alex offered to take a break. Welcome to read when they came out, they met three black lads. Among the three people, one of them is a tall and thin black boy with big hands. He is carrying a guitar and standing in front of the door of the recording studio. The other black boy was sitting on a chair in the corridor with a pair of drumsticks in his hands. There is another black man, who looks closely, he should be more than twenty years old, and he is leaning against the door with both hands free. When they saw Alex and his party coming out, they hurriedly stepped forward, and the black guy with the guitar on his back stretched out his hand to the producer Mark who was standing behind the door. "Hello! My name is Chuck Berry. I am the guitarist and

