The Gem of Empathy is colored purple and in the Sirenix Box, it is located on the opposite point with the Gem of Self-Confidence of a star along the Gem of Courage being at its left side and the yellow gem being at its right side.
They must travel to the Song Wharf in Melody, where Matlin, Musa's mother, sing the riddle to her. West to Song Wharf is the Ruby Reef, where the Coral Harp is found. They must play the harp and record it. After that, they must understand its message and find the location of the Gem of Empathy, which is in Data Bridge Castle in Zenith.
“Like a ruby shining under the sea, corals are strings that you feel in a key.”
“To find the gem, you must understand the message in the harp's music.”