The rules for jazz releases do not differ significantly from the requirements for standard releases. This mainly affects the artwork and the artist's name at album level, which are directly correlated anyway.
If you want to use text in your artwork, please note that only your artist name and the title of the track or album are included. Any additional text in the artwork will not be accepted by the platforms and may lead to the rejection of your release.
If there are additional performers (e.g. saxophonist, trumpet player, etc.), enter these performers as a feature at the album and track level. This will also display the release under the artist profiles of these musicians. A profile will be created automatically if the artist in question does not already have one.
Please note that these requirements are set by the streaming services and not by MusicHub.