《Cast in Steel》는 2015년 9월 4일에 발매된 아하의 음반이다. 유니버설 뮤직 그룹에 의해 발매되었다.
| 제목 | 작사 | 작곡 | 프로듀서 |
|---|
| 1. | 〈Cast in Steel〉 | Pål Waaktaar-Savoy | Waaktaar-Savoy | Savoy, Erik Ljunggren, Peter Kvint[a], Morten Harket[a] | 3:50 |
| 2. | 〈Under the Makeup〉 | Waaktaar-Savoy | Waaktaar-Savoy | Waaktaar-Savoy, Ljunggren, Kvint[a], Harket[a] | 3:25 |
| 3. | 〈The Wake〉 | Harket, Ole Sverre Olsen | Harket, Kvint | Harket, Kvint | 3:45 |
| 4. | 〈Forest Fire〉 | Magne Furuholmen | Furuholmen, Harket, Martin Terefe, Kvint | Steve Osborne, Furuholmen, Ljunggren, Kvint[a], Harket[a] | 3:54 |
| 5. | 〈Objects in the Mirror〉 | Furuholmen | Furuholmen | Osborne, Furuholmen, Ljunggren, Kvint[a], Harket[a] | 4:14 |
| 6. | 〈Door Ajar〉 | Waaktaar-Savoy | Waaktaar-Savoy | Waaktaar-Savoy, Alan Tarney, John O'Mahony[b] | 3:46 |
| 7. | 〈Living at the End of the World〉 | Harket, Olsen | Harket, Kvint | Harket, Kvint | 4:06 |
| 8. | 〈Mythomania〉 | Furuholmen | Furuholmen | Furuholmen, Ljunggren, Kvint[a], Harket[a] | 3:49 |
| 9. | 〈She's Humming a Tune〉 | Waaktaar-Savoy | Waaktaar-Savoy | Waaktaar-Savoy, Ljunggren, O'Mahony[b] | 4:02 |
| 10. | 〈Shadow Endeavors〉 | Waaktaar-Savoy | Waaktaar-Savoy | Waaktaar-Savoy, Tarney, O'Mahony[b] | 4:21 |
| 11. | 〈Giving Up the Ghost〉 | Furuholmen | Furuholmen | Furuholmen, Ljunggren, Kvint[a], Harket[a] | 4:15 |
| 12. | 〈Goodbye Thompson〉 | Waaktaar-Savoy | Waaktaar-Savoy | Waaktaar-Savoy, Tarney, O'Mahony[b] | 3:34 |
Deluxe edition (bonus tracks)| 제목 | 작사 | 작곡 | 프로듀서 |
|---|
| 1. | 〈The End of the Affair〉 | Furuholmen | Furuholmen | Furuholmen, Ljunggren | 3:31 |
| 2. | 〈Mother Nature Goes to Heaven〉 (original version) | Waaktaar-Savoy | Waaktaar-Savoy | a-ha | 4:33 |
| 3. | 〈Nothing Is Keeping You Here〉 (original version) | Waaktaar-Savoy | Waaktaar-Savoy | a-ha | 4:41 |
| 4. | 〈Shadowside〉 (demo version) | Waaktaar-Savoy | Waaktaar-Savoy | a-ha, Ljunggren | 4:16 |
| 5. | 〈Start the Simulator〉 (stereophonic mix) | Waaktaar-Savoy | Waaktaar-Savoy | Mark Saunders, Roland Spremberg | 5:19 |
| 6. | 〈Foot of the Mountain〉 (Mark Saunders remix) | Waaktaar-Savoy | Waaktaar-Savoy, Furuholmen | Saunders | 4:18 |
