As trombones and trumpets blare through the House of Blues, someone shouts "Work it girl!" as Theresa's grandmother second lines to the music. While NewBirth Brass Band performs onstage, backstage another type of party is under way.

The nine members of The Revealers assemble with the intent to make history. This will not be an ordinary performance. The headliners are still basking in the spiritual sunligh...