Alice Cooper Johnny Depp Was Happy-Go-Lucky During Amber Feud

9/15/2016 3:16 PM PDT

Alice Cooper Says Johnny Depp Was Happy-Go-Lucky During Amber Heard Feud

EXCLUSIVE

Johnny Depp flipped the switch on his legal war with Amber Heard -- fully blowing off the drama to focus on one thing ... being a rock star.

That's what Hollywood Vampires frontman Alice Cooper told us at LAX when we asked how their recent tour went down. Remember, their band hit the road right as Amber went public with the domestic violence accusations.

Check out the vid ... Alice tells us how Depp was able to keep it professional.

Well, as professional as a rock band can be while touring the world surrounded by hot chicks.