DANG! (hocus pocus) (English Ver.)

"Side-B : Memoirs of Echo Unseen" (stylized as "side-B : memoirs of echo unseen") is the first single album by Billlie. It was released on October 23, 2023 with "Dang! (Hocus Pocus)" serving as the single's title track. "BYOB (Bring Your Own Best Friend)" was pre-released on September 27, 2023. The physical album comes in two versions: Blue and Violet.