My band has been known to do things like playing the B part of a tune as an intro to a song, throwing the A part in as a bridge, then playing them in the "normal" sequence at the end of the song itself. Depending on the song, tune and purpose - we may just keep right on going - eg., songs about whisky or other strong drink with Temperance Reel as an intro/bridge (equal time ya know... ;-) or an emigrant-type song with a bridge of the A part of Visit to Ireland, with the full tune at the end.

While we no doubt irritate the "trad music police" - we do anyway by our normal set-up... "Why, that mandolin and whistle player just picked up an electric bass and the fellow playing bodhran just got behind a drumset!! SCANDALOUS!"

If the flow is good and the feel is good and you are making the musical statement you want to make (if you have one) - DO IT.

Why, we've even been known to throw in an instrumental verse as a bridge, in the relative minor, if the song itself is too "happy." Experiment and push yourself - it is the only way to grow as a musician. Otherwise, you might as well be playing industrial generic pop music.

Good luck -

Pete