Cool, modding this as soon as I have motivation
https://web.archive.org/web/20151224000420/http://codeztslabel.info/album/ztsl020 Here is a fairly good metadata source for the occasion.
Considering the RC statement on metadata allowances the metadata seems to be correct.
Allowance: For songs where the composer(s) and singer(s) are different people, the singer(s) may be listed after the composer(s) or circle/group name following a "feat." indicator.