The 88-year-old Rock and Roll Hall of Famer issued an apology on Tuesday for what his publicists called "a bad night for one of America's living blues legends."
The written statement says King and his band had taken a four-week break before the April 4 Peabody Opera House show. The band drove straight to St. Louis from Las Vegas, a 24-hour, 1,600-mile trip each way. And King missed his daily dosage of diabetes medicine, which elevated his blood sugar.
Concertgoers said King's rambling set featured a handful of complete songs and a 15-minute sing-along of "You Are My Sunshine."