O Thank U ..
<Credit>
Composed by 한길, D&T
Lyrics by 한길, 마르코
Arranged by 한길, D&T
Piano by 한길
Guitar by 정수완
keyboard by D&T
Chorus by 한길
Mixed by 한길 @ Vamos Records Studio
Mastered by 권남우 @ 821 Sound Mastering
Executive Producer Vamos Records
Music Producer 한길
Planning & Marketing 김지현, 안연주
Administration 김지현