어땠을까 (feat. 김종완 of NELL)

Produced by Agust D, 김종완, EL CAPITXN
(Agust D, 김종완, EL CAPITXN)

Piano - 김종완
Synthesizer - 김종완
Acoustic Guitar - 김종완
Electric Guitar - 김종완
Background Vocals - 김종완
Drum Programming - 김종완
Gang Vocal - Slow Rabbit, FRANTS,…