Allan, no objection whatsoever from me. With your flautist, you are better off than most. My "advice" was for songwriters who feel good enough to play in the World Professional League, so if they are willing to associate with a composer, they are likely to want one who knows the trade well. Good training, whether in classes or self-taught, is such a giant advantage over mere "creative feeling" that it is not wise to dispense with either.

There are many excellent composers around who are looking for a companion whose strength is on the lyrics side. If both have a decent knowledge of the other's art, all the better. The exact roles can vary - but they are the main reasons why such cooperations fail. This is no different from other kinds of intimate partnership.