Japan has long held the title of the second-largest music market in the world , only surpassed by the United States.   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.   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.  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.