The Proteans Production of Mort used many samples from https://freesound.org, most utilise Creative Commons licenses, however the following have either Sampling + or Attribution 4.0 licenses:
| Sample | Author | License |
|---|---|---|
| Hevonen ohi, kaviot / Horse passing by galloping on asphalt, hooves clattering | YleArkisto | Attribution 4.0 |
| Harp Arpeggios - dissolved spell.wav | gertraut_hecher | Attribution 4.0 |
| wilhelm.wav | SweetNeo85 | Sampling + |
| Glass Bounce | OranTalbot | Attribution 4.0 |
| Cuckoo Clock, Single, A.wav | inspectorj | Attribution 4.0 |