He returned to Chicago and got back together with an old girlfriend. He grew more religious upon learning she was pregnant, and especially so after learning his daughter had an atrial flutter. “I think it was the baby that, you know, brought my faith back,” he remarked later. On the subject of her heart condition, he said, “[It] made me pray a whole lot, you know, and need a lot of angels and just see shit in a very, like, direct way. ” His daughter was born in September 2015. During this time, he began to mull over themes he wished to include in his next mixtape, including “God, love, Chicago, [and] dance. ” Before working on that, he contributed heavily to Kanye West’s album The Life of Pablo. Coloring Book was mainly recorded between March and April 2016. He rented out a room at a Chicago studio, and then another as he needed more space. He gradually came to more or less live at the studio during recording: “Eventually we decided to rent out the whole studio, and we just put mattresses in all the rooms and it became a camp. ” His method of making the mixtape was inspired by West taking over an entire studio to make Pablo.