Let’s pop [Credit] 1. Pop Pop (Feat. 서서(seoseo)) Composed by itssiu, 서서(seoseo), SIM2 Lyrics by itssiu, 서서(seoseo) Arranged by SIM2 Piano, Drum, Synth, Bass by SIM2 Main, Chorus Vocal by itssiu, 서서(seoseo) Mixed & Mastered by SIM2 Artwork by @hsbin