Trích dẫn từ version A của album, trừ đôi chỗ chỉ nói tóm lược.[44]

• Super Junior - vocals, background vocals
  • Leeteuk - vocal, rap
  • Heechul - vocal
  • Yesung - main vocal, background vocal
  • Shindong - vocal, rap
  • Sungmin - lead vocal, background vocal
  • Eunhyuk - vocal, rap
  • Siwon - vocal
  • Donghae - lead vocal, rap
  • Ryeowook -main vocal, background vocal
  • Kyuhyun - main vocal, background vocal
• Super Junior-M - vocals, background vocals ("Perfection")
  • Zhoumi - vocal
  • Henry - vocal
• Yoo Youngjin - background vocal
• Kang Sungho - background vocal
• Park Il - background vocal
• Chance (One Way) - background vocal
• Hitchhiker - background vocal, guitar, keyboard, synth và chỉ đạo giọng beats, bass, sound processing
• Thomas Troelsen - background vocal
• TST - brass section
• Choi Wonhyuk - bass
• Kim Jungbae - guitar
• Lee Hwa - piano
• Yoong - string section
• Shin Seokchul - Trống
• Choi Hoon - bass
• Cho Jeongchi - guitar
• Go Gyeongchun - keyboard
• Lee Sungryeol - guitar
• Park Cham - guitar
• Super D - keyboard
• Kim Kyuwon - pro-tools editing
• Goo Jongpil - mixing
• Nam Koongjin - mixing
• Lee Seungho - mixing
• Jeon Hoon - tổng giám sát (tại Sonic Korea)