Adele is a British singer-songwriter renowned for her powerful voice, emotional ballads, and timeless pop-soul sound. Rising to fame with her debut album 19, she became a global sensation with chart-topping records like 21, 25, and 30, winning numerous Grammy Awards and setting sales records worldwide.

While Adele has not collaborated with ONE OK ROCK, her music has resonated strongly with the band. Vocalist Taka Moriuchi has publicly praised her artistry, and the band has paid tribute by covering two of her iconic songs.

In 2016, Taka performed a heartfelt solo cover of Hello, and in 2022, ONE OK ROCK released their own rendition of Easy on Me showcasing the band's emotional depth and admiration for Adele's songwriting.