Hail, hail Chuck Berry.

Famous friends, fans, and fellow musicians took to social media with their reactions after hearing the news of rock pioneer Chuck Berry's death at the age of 90.

Rock legend Chuck Berry died at the age of 90, police in St. Charles County, Missouri confirmed.

St. Charles county police say they responded to a medical emergency Saturday afternoon and found Berry unresponsive. He could not be revived and was pronounced dead.

Berry hit the Top 10 in 1955 with "Maybellene" and went on to influence generations of musicians. Among his other hits were "Johnny B. Goode" and "Roll Over Beethoven."

The Associated Press contributed to this report.