Contains very strong language. Liam Gallagher performs D'You Know What I Mean at Glastonbury 2017. Watch Liam Gallagher's 2017 Glastonbury set on demand on BBC iPlayer: https://www.bbc.co.uk/iplayer/episode/p056bkls Watch Glastonbury performances from throughout the years on BBC iPlayer: https://www.bbc.co.uk/iplayer/episodes/b007r6vx/glastonbury Listen and download your favourite Glastonbury sets on BBC Sounds: https://www.bbc.co.uk/sounds/brand/b007r6vx Dig deep in to performances, articles, photos and more at: https://www.bbc.co.uk/glastonbury Follow all the action via @bbcglasto https://twitter.com/bbcglasto