Typically, three headliners perform on Glastonbury’s Pyramid Stage each festival: one headline act on Friday, one on Saturday and one on Sunday. The arrangement reflects the festival’s traditional three-night headline structure.
The Pyramid Stage is Glastonbury’s largest and most recognisable performance space. Although thousands of artists appear across the wider site, the three acts closing the Pyramid Stage’s main evenings receive the festival’s most prominent headline billing. For example, the 2007 edition featured Arctic Monkeys, The Killers and The Who in those headline positions.
The word “typically” matters because Glastonbury’s schedule is not completely fixed. A booked act can cancel, another performer can be promoted, and special appearances or unusual programming can complicate the idea of a single headline slot. The festival also has other major stages with their own headline acts.
So “three” describes the normal Pyramid Stage pattern, not the total number of important performers at Glastonbury. Acts playing earlier in the day, guest appearances and the Sunday afternoon Legends slot are separate from the three principal evening headliners.