There are several more-or-less well differentiated artists named Coma in the database. This one is currently a catch-all for releases with unidentified artists. It is virtually certain that it should be split in different artists.
If you own any of these releases, or have information about them, please try to determine if it belongs in a separate artist and move it (create a new artist if necessary), or contact me.
Please do not to add more releases here!