In the "Rights holder – Composition (Publishing)" field at track level, please enter the name of the person or company that administers the copyright of this track's composition (music publisher).
If it's a cover, enter the publisher or rights holder of the original songwriter. If the songwriter administers their own rights without a publisher, enter "Self-published." If you don't know it, leave it blank. If there is more than one rights holder, separate them with a comma.
This field is not mandatory.