EDM US on Instagram: "The Chainsmokers dropping ‘Don’t Let Me Down’ at Tomorrowland (2019) At Tomorrowland The Chainsmokers set at 2019 played Don t Let Me Down, which was already a well known track by then, released in 2016 with vocals by Daya and played on radio and festivals everywhere. Hearing it again on the Tomorrowland mainstage showed how long this song has stayed relevant in dance music culture. As the track dropped, the crowd sang every word and moved together in front of the iconic st