Adele and Beyoncé – sent letters to each of the tech giants demanding to know if they had used their songs to develop artificial intelligence systems.According to BBC, the letter was sent to more than 700 firms in total, writing that they had “reason to believe” that the recipients “may already have made unauthorized uses” of its music.Sony Music has reportedly given firms a deadline to respond, and said it will enforce its copyright policy “to the full extent permitted by applicable law”.The conversation around A.I. in music is particularly contentious at present, sparking ongoing concerns about how and where emerging technology “learns” to produce its output and if it has permission to pull from data like books or music catalogues.The EU’s upcoming AI Act is set to tighten up and clarify rules around artificial intelligence and how systems are trained.One high-profile case saw Game of Thrones author George R.R.