The 39-year-old Frankenstein appeared Monday before a judge who asked why he "went crazy" at the Aug. 27 concert in Cincinnati. Frankenstein replied that he had been drinking and didn't really remember anything.
Frankenstein, of Hamilton, is being held on $80,000 bond on counts of menacing, disorderly conduct and vandalism.
Keith's hits include a song that states: "You ain't much fun since I quit drinkin'."
