EDITOR'S NOTE: Mothers of tweens unite! Elyzabeth Marcussen dared the First Mariner Arena in Baltimore Wednesday to see the Jonas Brothers with her young daughters. Here's her story.

One day in June, my 12-year-old daughter, Haley, tore up the stairs from the basement where she had been watching the Disney Channel and breathlessly announced:

"Mom! Mom! The Jonas Brothers are coming to Baltimore at a marina!"

No, the Jonas Brothers are not sailors with a love for the Inner Harbor. What she meant to say was that the Jonas Brothers, three talented brothers from North Carolina who are on the top of the pop charts, would be...