Machine Gun Kelly headlined London’s Royal Albert Hall earlier this week (May 31) and was joined onstage by both Halsey and James Arthur.Machine Gun Kelly started the show by giving new single ‘Pressure’ its live debut before he was joined onstage by Halsey for their 2020 track ‘Forget Me Too’.Later in the set, James Arthur took to the stage, with him and MGK covering Avicii’s ‘Wake Me Up’ before tackling their 2017 song ‘Go For Broke’.Check out fan-shot footage below.IM NOT EVEN JOKING HE BRROUGHT PUT HALSEY AND THEY SANG FORGET ME TOO THIS IS MY WHOLE LIFE pic.twitter.com/aFxx0Z8Mns— bry (@forgetmetwo) June 1, 2023Halsey performing ‘Forget Me Too’ with Machine Gun Kelly today in London.