Complex sentence: The cover art for the two CD sets were by British photographer Rankin, which featured Minogue with headphones on; according to Minogue's friend William Baker, he felt the shots of Minogue represented a "serious" approach to her music.
Split into simpler sentences: The cover art for the two CD sets were photographs by British Rankin, and featured Minogue with headphones. According to the singer's friend William Baker, the shots of Minogue represented a "serious" approach to her music.