Thanks a lot for your comment (glad that the illustrations were noticed, I did them in the last 2 hours before the deadline while listening to my tracks in the background, it was tense) !
I really liked spliting up the track in half in En Force with piano in between, like you said it provided a moment to breathe to make the guitar solo have a bit more impact (and it adds a bit more variety to the track by creating different parts so it's pretty nice).
Anyway thanks for listening and glad that you appreciated my album !