Warning: Contain's flashing images. Billie Eilish performs Oxytocin/COPYCAT at Reading Festival 2023. UK Viewers can watch the set in full for the next 30 days on iPlayer: https://www.bbc.co.uk/iplayer/episode/m001q1mn Watch more highlights on BBC iPlayer: http://www.bbc.co.uk/iplayer/episodes/b007xt4m Listen to sets and highlights on BBC Sounds: http://www.bbc.co.uk/sounds/brand/b007xt4m Follow all on social @BBCR1 / @BBCRadio1. #billieeilish #readingfestival #oxytocin