Lady Gaga has started to promote her new single 'Perfec Illusion' in the UK and today she co-hosted the breakfast show BBC1 radio alongside Nick Grimshaw. Gaga annnounced that she worked with Mark Ronson on the album, she also discussed the meaning of her single and the collaboration that the album will include, specially a track with Florence Welch (Florence and The Machine). Just in case you missed it, hear the full interview below.