I listened to the Swiss songs, and...
"Gold" is very soulful, but overall it has no standout parts. Last place contender at the contest.
"Cet air là" is an intent to imitate Zoë's style, but it doesn't really work. Weak production.
"Two Faces" is very catchy and energetic, with a small revamp it could work.
"Fire in the Sky" is quite dramatic but it definitely lacks too much.
"Exodus" is EDM. I need to hear the studio version, but it sounds like a flop to me.
"Apollo" actually sounds great. My favorite, and bound to have an outstanding performance.