What are some good scriptures about Praising God openly without shame?

My church has an annual youth lock-in every Good Friday. It is basically just a youth gathering were we come have fun, praise God, Dance, have performances etc. Last year i theme was "We Are Champions" and it was a black out with black lights, strobe lights, etc. We want to start working on the theme for this year and me and a friend came up with having a Masquerade Ball sorta thing, and the basic concept behind it was that it gives teenagers the chance to praise God openly and freely without having to worry about what people may say because they have on a mask. That is just the rough concept, but i have to have a scripture to go with the theme that we are trying to do centered around a Masquerade Ball so that we can present it to our Pastor and begin to work on it for next year. What scriptures do you think would go with praising God openly and freely without shame? or What scripture do you think would go best with the Masquerade Ball concept?