Sony Music Entertainment (Japan) Inc. (parent company, not normally a label - see subsidiaries)
SonyMusic as of 2014-04-01:
* Sony Music Labels Inc.
- SRCL - Sony Music Records Inc.
- SECL - SME Records Inc.
- AICL - Sony Music Associated Records Inc.
- ESCL - Epic Records Japan Inc.
- DFCL - Defstar Records Inc.
- Ariola Japan Inc.
- KSCL - Ki/oon Music Inc.
- Sony Music Japan International Inc.
* Aniplex Inc.
- manufacturing roles for other labels
Good Reference for Labels/Imprints: Sony Music Distribution (Japan) Inc.
In the beginning of 1998, this is considered the release label for a handful of AI** releases using the SONY walking eye and not mentioning a division - these artists' releases later appeared under SMEJ Associated Records. For several years before and after 1998, this is also considered the release label for a handful of SR** releases using the SONY walking eye but not released through the Sony Records division.
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
Outdated rateyourmusic label guide: https://rateyourmusic.com/wiki/Music:Sony