Bethesda's discovery turns her middle school upside down. Ms. Finkleman, formerly kind of a "non-person" to her students becomes a superstar. The principal, eager to win a district music contest, orders the school choir to perform a rock concert, rather than the previously planned Irish folk music concert. And through a scheme hatched by Ms. Finkleman, Bethany becomes friends with Tenny, the class ne'er do well, who is actually a very gifted musician.
A really fun, quick reading mystery that doesn't get solved until the last few pages.