Hi there,
As Martin said you can play with mouse and keyboard, here is the list of the in-game controls:
The game was developed with a French keyboard! Thus your traditional WASD keys won't be functioning properly.
Please install a French keyboard first, then switch your keyboard and you will be ready to go!
Mouse Left button: Poke action (using you violin bow, can be performed in various directions: up / down / left / right pressing ZSQD respectively)
Z: up input for violin bow use
Q: run towards the left / violin bow use towards the left
S: down input for violin bow use
D: run towards the right / violin bow use towards the right
A: Play your violin (Y input on a Xbox Controller)
Space bar: jump (analogical, the longer you press, the higher you jump)
P: Pause Menu (presse again to exit menu)
Space bar in-menu: Confirm
We suggest you make sure you plugged your controller before launching Symphonia and if you are playing with a PS4 controller, maybe installing DS4WINDOWS might help.
Please let us know how it went!
Cheers