Little Einsteins - Season 2 - Eps 24: The Secret Mystery Prize
The team is playing hide and seek in Japan when they come upon an old Japanese woodblock. The woodblock shows a picture of a prize box hidden at the top of Mt. Fuji, but the box can only be opened with a golden music key.
About Little Einsteins

Title: Little Einsteins
First Air Date: 2005-10-09
Last Air Date: 2009-12-22
Status: Ended
Rating: 7.1/10 (from 59 votes)
Language: EN
Seasons: 3
Total Episodes: 67
Network: Playhouse Disney
Genres: Animation, Family, Kids
Production Companies: Curious Pictures, The Baby Einstein Company
Synopsis
A group of musically gifted and ethnically diverse children travel around the world in an artificially intelligent rocket named Rocket.
Cast

Natalia Wojcik
Annie (voice)

Jesse Schwartz
Leo (voice)

Erica Huang
June (voice)

Aiden Pompey
Quincy (voice)

Harrison Chad
Leo (singing voice)