I have tried to add a link to an online catalog of Girolamo Frescobaldi’s works to the composer’s entry, but got a message “This URL is not allowed for the selected link type, or is incorrectly formatted”. I have chosen the type “other database”, the URL is http://frescobaldi.music.duke.edu
How could I enter this URL? Should I use a different type?
As far as I know the “other databases” is restricted to a whitelist (the ones listed below)
Instead, I would create a Series page for the Frescobaldi catalogue where we can link all works and add your URL as “official homepage” (which might not be technically true, but looks close enough for me).