I found a Grey Larsen article online, Advice for Flute and Whistle Players on Finding Good Places to Breathe in Irish Dance Tunes
[PDF], which covers some of the same material I discussed in my comments on breathing as ornamentation in more detail:
Players of instruments other than flute and whistle may want to bear in mind that although they can, and often do, play in a non-stop manner, their music may benefit from the introduction of occasional spaces. Creating such spaces can clarify your phrasing, much as a sentence becomes more clear with the appropriate use of punctuation marks such as commas, semicolons and the like. So, it is important and useful for fiddlers, accordion players, pipers, banjo players, etc., not just flute and whistle players, to develop a sense of when and where to eloquently leave out notes.
The whole article is worthwhile.