Thank you very much again guys for your nice comments! I didn't expect that.
Since many questions also refer to the stabilization process, let me say that it took a me few years to get this result from my bare hands. After many stabilizations, u get to understand what the software likes and what it loathes. Of course u can't film everything with that technique, since not everything can be stabilized. But restriction promotes creativity, so I can get along with that compromise
What music is it?
It's written in the title of the video...

Did you go by inlines or skateboard while filming?
I made all of the shots on my inline-skates (apart from the one shot of me where my friend used his skateboard).
The nicest thing about shooting with Magic Lantern is you can shoot close to a square if you want to, which is great for social media and phones!
Independently of social media, that's also what I love about ML, having that total freedom when it comes to aspect ratio. Also being able to shoot narrower than 21:9 is amazing.

Was your resolution a creative decision or technical decision ?
Purely creative.
Is that Warp stabilizer or another effect?
Warp.