Sony Music Entertainment (Japan) Inc. (do NOT file releases here!)
Most releases here belong to a subsidiary imprint. The Sony Music Shop is a good source for Japanese imprints.
Sony Music Entertainment Japan, stylized in logos as "SonyMusic Group", is independent of the US‐based Sony Music Entertainment and not involved in the 2004-2008 joint venture between US-based Sony and BMG.
Sony Music Entertainment Japan dates back to March 1968, when CBS/Sony Records Inc., a 50‐50 joint venture between Sony Corporation of America and CBS Inc. of the US, was established. It was renamed CBS Sony Inc. in August 1973 and then CBS/Sony Group Inc. in August 1983. In January 1988, after Sony acquired CBS Records and the half of CBS/Sony Group that it did not already own, the label became a wholly‐owned Sony subsidiary, and was renamed Sony Music Entertainment (Japan) Inc. in April 1991.
For more information on the current structure of the company, see http://www.sme.co.jp/index2.html