The phrase "a final note of" is correct and usable in written English.
It can be used to introduce a concluding remark or summary in a discussion or piece of writing.
Example: "As we wrap up this meeting, I would like to add a final note of appreciation for everyone's hard work this quarter."
Alternatives: "a concluding remark of" or "a last point of".
Yet a final note of caution.
Yet Vann ends the story ambiguously, on a final note of cruelty.
A final note of defensiveness by the Bush campaign was sounded on the issue of debates.
The silliness of Di Tzeitung's reasoning makes it almost too easy a target, so I'll stop, on a final note of absurdity: Di Tzeitung is based in Brooklyn.
A final note of caution: The Times's new safeguards against deceitful journalists may well be tested in a different way in the not-too-distant future — by questions of finance rather than of fabrication or favoritism.
Jonathan's father had once shown him the table, and noted his son's admiration of it, but in a final note of cruelty, did not leave it to Jonathan when he died.
By way of a final note on A Dangerous Method: although I usually can't adapt to Brits doing eastern european accents (like Danielle Day-Lewis in the aformentioned The Unbearable Lightness of Being) Keira Knightley's portrayal of Sabina Spielrein, who developed this theory of death-urge as creative-urge (from which Freud borrowed) could be the basis for a feature film.
A final note on the negative dynamic response of TLS in Greece implies that it is the self-employed that benefit (in terms of taxation) more from the positive technology shock.
A final note on research privilege: Though some of the articles I'm sharing via Google Scholar are publicly downloadable, many are only accessible in full via a university's online journal database.
A final note for those of you who took an internship that wasn't the one you really wanted - take advantage of the opportunity as if it were your first choice!
A final note to gardeners and fans of botanical art: If you're traveling back south after a day in Kent, make a short but worthwhile detour just off Route 202 to the streamside hamlet of New Preston and a stop at Pergola on East Shore Road.
