Glastonbury to celebrate 50 years with commemorative festival book featuring contributions from Jay-Z, Chris Martin, and more Glastonbury festival will celebrate 50 years of modern musical influence via the release of commemorative festival book, 'Glastonbury: 50.' Related Posts: Glastonbury Festival set to ban plastic bottles come 2019 BBC announces The Biggest Weekend festival to be held in Glastonbury’s stead in 2018
