【Content Introduction】 This book, "Whose Blue Earth Is It?", is a work for children that deals with themes of art, music, and the Earth. It contains diverse content related to ballet, music, and art, and has high educational value. 【Publisher Information】 Published by Ongaku Center Co., Ltd., the price is 1,000 yen. It is filled with content that children can enjoy and learn from. 【Table of Contents Overview】 The table of contents includes various topics related to ballet, art, and the Earth, with a wealth of content to capture children's interest. - Title: Whose Blue Earth Is It? - Publisher: Ongaku Center Co., Ltd. - Price: 1,000 yen - Table of Contents: Includes content on ballet, children, music, art, the Earth, etc. I used to work at a kindergarten and sang with the children in various situations, such as daily childcare, events, music concerts, and graduation ceremonies. This book also includes versions of some songs with upgraded accompaniments, which was very helpful. When not in use, I keep it carefully stored on a bookshelf, so it is in almost pristine condition. Thank you for looking.