Chuck Berry, the singer, songwriter and guitar great who practically defined rock music with his impeccably twangy hits as “Maybellene,” “Roll Over Beethoven,” “Memphis,” “My Ding-a-Ling” and “Sweet Little Sixteen,” has died. He was 90. The singer/songwriter, whose classic “Johnny B. Goode” was chosen by Carl Sagan to be included on the golden record of Earth Sounds and Music launched with Voyager in 1977, died Saturday afternoon, St. Charles County Police Department confirmed. The cause of death was not revealed. Read more http://www.billboard.com/articles/n...ce=Direct&utm_source=t.co&utm_medium=referral