Question: Who headlined the first ever glastonbury festival in 1970?
Disambiguated questions and answers: question: Who were originally supposed to headline the first ever glastonbury festival in 1970?
Who was the replacement headliner at the first ever glastonbury festival in 1970?
Who were other billed acts at the first ever glastonbury festival in 1970?
answer: The Kinks and Wayne Fontana and the Mindbenders
T. Rex
Tyrannosaurus Rex
Steamhammer, Quintessence, Stackridge, Al Stewart and Keith Christmas
Natural Questions answer: T. Rex (from the Wikipedia article "Glastonbury Festival")