The Pearl Music Box is a music box that is seen in the Pearl Piari. It plays an instrumental of Taiyō No Rakuen and in Mermaid Melody Pure, it also plays the music box part of Beautiful Wish. This music box is most often seen near Lucia and makes a cameo in Sekai de Ichiban Hayaku Asa ga kuru Basho.
The Pearl Music Box is light blue with a yellow wind-up handle. Inside it is pink and has many small holes where little pegs come out as the music plays. It has a pearl in the center.