Fernström did himself assign opus numbers 1-99. He also created several compositions without assigning any opus numbers. These have here been given numbers above 1000.
| Opus | Hidden | Title | Instruments | Duration | |
|---|---|---|---|---|---|
| -- | 9999 | A well known tune in several variants | Show | ||
| -- | 9999 | Fanfares | Show | ||
| -- | 9999 | A Festival Polonaise | Show | ||
| -- | 9999 | A Festival Prelude | string orchestra | Show | |
| -- | 9999 | Romance, c sharp minor | va, orch. | Show | |
| -- | 9999 | Two Short Fugues | Show | ||
| 10 | 10 | Sympnony no. 2 | Show | ||
| 12 | 12 | Variations, Passacaglia and Fugue on a theme by Percy Buck | Show | ||
| 13 | 13 | Scanian Rhapsody | 2122 2210 11 0 str | 11' | Show |
| 15 | 15 | Symphony no. 3 | Show | ||
| 16b | 16 | Pastoral | orchestra | Show | |
| 17 | 17 | Symphonic Variations | orchestra: 2122 2210 11 0 str. | 12' | Show |
| 2 | 2 | Four Initmate Miniatures | string orchestra | 11 min | Show |
| 20 | 20 | Symphony no. 4 | Show | ||
| 21 | 21 | The capricious troubadour | Show | ||
| 24a | 24 | Fragments | orchestra | Show | |
| 25b | 25 | Ouverture to the opera Echnaton | Show | ||
| 27 | 27 | Symphony no. 5 | Show | ||
| 4 | 4 | Symphony no. 1 | Show | ||
| 40 | 40 | Symphony no. 6 | orchestra: 2*3*3*2 4331 11 1str. | 43' | Show |
| 42 | 42 | Prélude solennel | string orchestra | Show | |
| 43 | 43 | Rao-nai-nai's Songs | Show | ||
| 51 | 51 | Sympnony no. 7 | Show | ||
| 56 | 56 | Symphony no. 8 | Show | ||
| 58b | 58 | Suite from The Wedding of the Isis Sisters | -- 2222 2231 10 0 str | 14:30 | Show |
| 60 | 60 | Symphony no. 9 | Show | ||
| 65 | 65 | Symphony no. 10 | Show | ||
| 70b | 70 | Suite from A Midsummernight's Dream | Show | ||
| 71b | 71 | Suite from Around the World in 80 Days | Show | ||
| 74 | 74 | Pan plays | narrator, orch. | Show | |
| 77 | 77 | Symphony no. ll | chorus, orchestra | Show | |
| 86b | 86 | Suite no. 1 from The Merchant in Venice | Show | ||
| 86c | 86 | Suite no. 2 from The Merchant in Venice | Show | ||
| 87b | 87 | Suite from Ni-Si-Pleng | Show | ||
| 88 | 88 | Symphonic Prologue | Show | ||
| 92 | 92 | Symphony no. 12 | Show | ||
| 94 | 94 | Ostinato for string orchestra | Show | ||
| 96 | 96 | Festival Music | Show |