Michael Eavis hosted the first festival , then called Pilton Festival , after seeing Perception_active an open-air Led Zeppelin concert Social_event at the 1970 Bath Festival of Blues and Progressive Music .

Speakers have included Cause_to_be_included Michael Eavis , DJ Shadow , Paul Epworth , and representatives of companies such as Beggars Group , Ticketmaster , PRS for Music , Universal Music Group and Topspin .