“I can’t remember when I had my own free time,” Bang Chan confesses in the opening line of “Holiday”, off of Stray Kids’ 2025 mixtape DO IT. It’s a line that will be repeated throughout the uptempo track about wanting to take a vacation, and a relatable sentiment for most modern listeners—even if they didn’t spend most of their 2025 on a K-pop world tour. DO IT is the first in Stray Kids’ “SKZ IT TAPE” series, which sets out to better define them in a specific moment in time, seven years into their activities as a group. The five-track EP also includes two versions of “Do It”, a reggaetón-inspired hip-hop track about going for what you want. The track shares double lead single status with “DIVINE”, an old-school hip-hop song that confidently declares, “All we need is love, dreams and Stray Kids.” Sentimental fan song “Photobook” further balances out the album’s play between unsettled introspection and light-hearted swagger. The writing of the album’s songs was led by 3RACHA, aka members Bang Chan, Changbin and Han.