ST. CHARLES, MO (KTVI) – Police say that legendary rock n’ roll musician Chuck Berry has died at the age of 90-years-old.First responders were called to a medical emergency on Buckner Road at about 12:40pm Saturday. They found an unresponsive man inside the home. They started administering lifesaving techniques. St. Charles Police say he could bot be revived. Berry was pronounced dead at 1:26pm.