Parenting Teenagers (12-18) Support Group
This community is focused on the joys, challenges and concerns faced by parents of teenagers (12 to 18 year olds). The major areas of child development include: physical development, perception and sensory development, communication and language development, cognitive development, emotional development and social development.

If it were me, I would talk to your husband about have a solid front and one parent shouldn't override the other. That said, I don't know that there is a significant difference between 10:30 and 11.
So how did it go? Was everything okay in the end?
When I go to concerts or something it depends on when the concert ends.
I think you and your husband should sit down with your child and ask him what he thinks are fair, and tell him what you think are fair and work something out together.