Download MP3 Red Velvet (레드벨벳) - "Psycho" Metal Cover (feat. Ryu Sera (류세라) & Lee Keumjo (이금조) on Vocals) Download MP4 Red Velvet (레드벨벳) - "Psycho" Metal Cover (feat. Ryu Sera (류세라) & Lee Keumjo (이금조) on Vocals)