申し訳ありません、このコンテンツはただ今　アメリカ英語と 中文　のみです。 For the sake of viewer convenience, the content is shown below in one of the available alternative languages. You may click one of the links to switch the site language to another available language.

This package includes:
Version 1 04:12Version 2 01:53

This is an experimental track that is well suited for background accompaniment of the process of thinking, analysis, decision-making and other intense mental activity. Ideal for quiz shows, documentaries and scientific reviews.