Gary's right ... jazz isn't limited to song choices. Is the "Flintstones Theme" a jazz tune? If it's PLAYED like one, it is !
You can change the style of most anything to adapt to a new style. If you want a cool example of a few Jimmy Buffett tunes that cross the "jazz border" try:
Pencil thin mustasche(Swing), Volcano (Latin), Pirate Look at 40 (Bossa)
Jazz is a feeling and an interpretation, and while I am no expert, I can get the feeling accros to most people. Look at all the Broadway show tunes that get "jazzed up" .... I think Buffett has proven himself enough to the many generations of adoring fans that maybe it's time to educate the jazzers of his worth !

Most Jimmy fans won't like Coltrane .... I don't either for that matter, but I still appreiciate the talent and vision he showed. I just hated his tone.
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