more projects about composers, not only in english or american...

https://www.geni.com/projects/Compositeurs-Belges/14048

Why don't you just link these projects to this project then?

Terry Jackson (Switzer) Please do so for us. You can only link if you are in both projects.

Private User, I have done this but for the record, in case you wish to do this in future, this is how you could have done so:

Go to the project you are not a collaborator of and select Related projects 'edit'
You should then be able to type the project that is related that you DO collaborate on and it will then be listed as a 'related project.