Japan has long held the title of the second-largest music market in the world , only surpassed by the United States. [1] [2] Although, Japan briefly became the top music market based on retail value in 2010, as compact discs tend to be considerably more expensive than the world's average. [3] [4] In accordance with global trends, the value of the domestic market has been slowly declining in recent years. Nonetheless, as of 2016, physical sales are responsible for nearly three-quarters of the whole value of the Japanese music market, historically dominated by domestic acts. [2] The following lists cover the top-selling albums in the country, based on information provided by the Recording Industry Association of Japan and Original Confidence Inc. , commonly known as Oricon.