Key to Kashdune

Melinda and her shape-shifter family have unearthed four ancient Athenite journals that unlock the secret to navigating by the Earth's music. Now, with the help of their friends Harmony and Joe, they're off to the legendary Caribbean island of Kashdune. But the despicable Professor Stumpworthy is up to no good once again, and he's sure to try to use the ancient knowledge of Kashdune for evil...