BACK TO BASICS
Megjelenési dátum: 2006. augusztus 15.
US csúcshelyezés: #1

Első lemez:
01. Intro (Back To Basics) (C. Aguilera, C. E. Martin, K. Dioguardi, R. Hawkins, R. Darnell) - 1:47
02. Makes Me Wanna Pray (C. Aguilera, K. Dioguardi, R. Harrison, S. Winwood) - 4:10
03. Back In The Day (C. Aguilera, C. E. Martin, K. Dioguardi, D. Costa, J. Castor, L. Fridle Jr., D. Gibson, H. Jensen, R. Manigault, G. Thomas) - 4:13
04. Ain't No Other Man (C. Aguilera, C. E. Martin, K. Dioguardi, C. Roane, H. Beatty) - 3:48
05. Understand (C. Aguilera, K. Dioguardi, K. Holland, A. Toussaint) - 3:46
06. Slow Down Baby (C. Aguilera, M. Ronson, K. Dioguardi, R. Angry, W. Guest, M. Knight, E. Patton, G. Knight, M. Bernard, M. Harper, C. Jackson) - 3:29
07. Oh Mother (C. Aguilera, D. Thornton, M. Rankin, L. Thornton, K. Dioguardi, B. Coulais, C. Barratier) - 3:46
08. F.U.S.S. (C. Aguilera, C. Roane, K. Dioguardi) - 2:21
09. On Our Way (C. Aguilera, D. Thornton, M. Rankin, L. Thornton, K. Dioguardi) - 3:36
10. Without You (C. Aguilera, K. Dioguardi, M. Ronson, R. Lewis) - 3:56
11. Still Dirrty (C. Aguilera, C. E. Martin, K. Dioguardi) - 3:46
12. Here To Stay (C. Aguilera, H. Holley, T. Reyes, B. H. Allen, G. H. Jackson) - 3:19
13. Thank You (Dedication To Fans...) (C. Aguilera, C. E. Martin, K. Dioguardi, P. Sheyne, D. Frank, S. Kipner) - 4:58

Producerek
- Christina Aguilera (1., 2., 3., 4., 6., 7., 8., 9., 10., 11., 12. és 13. dal)
- Ben H. Allen (12. dal)
- Big Tank (7. és 9. dal)
- DJ Premier (1., 3., 4., 11. és 13. dal)
- Rich Harrison (2. dal)
- Kwamé (5. dal)
- L Boogie (7. és 9. dal)
- Q (9. dal)
- Tony Reyes (12. dal)
- Charles Roane (4. és 8. dal)
- Mark Ronson (6. és 10. dal)

Második lemez:
01. Enter The Circus (C. Aguilera, L. Perry) - 1:42
02. Welcome (C. Aguilera, L. Perry, M. Ronso, P. Ill) - 2:42
03. Candyman (C. Aguilera, L. Perry) - 3:14
04. Nasty Naughty Boy (C. Aguilera, L. Perry) - 4:45
05. I Got Trouble (C. Aguilera, L. Perry) - 3:44
06. Hurt (C. Aguilera, L. Perry, M. Ronson) - 4:03
07. Mercy On Me (C. Aguilera, L. Perry) - 4:33
08. Save Me From Myself (C. Aguilera, L. Perry, B. Bottrell) - 3:13
09. The Right Man (C. Aguilera, L. Perry) - 3:51

Producerek
- Linda Perry (1., 2., 3., 4., 5., 6., 7., 8. és 9. dal)