Helium (헬륨)

Credits

• Clarence Coffee Jr.
  arranger, background vocals
• E. Kidd Bogart
  arranger
• JUNNY
  background vocals
• KEY
  background vocals, vocal
• Sylvester
  arranger
• 강은지
  recording
• 남궁진
  mix
• 이민규
  editor, engineer, recording