The "01" indicates it is the first track of the Changes album.
Primarily an ode to his wife, Hailey Bieber , focusing on his attraction to her and their relationship. Key Musical Elements 01 Yummy.m4a
Verses mention his success and lifestyle, such as "Rolling eyes back in my head, make my toes curl" and "Drew House slippers on with the smile on my face". The "01" indicates it is the first track