Progressions I crib from Band-in-a-Box charts often seem to be pumped to the max with chords that I suspect the original composer did not contemplate. Ditto ones I learn from the local chord-melody banjo floggers. And then there are the ones painstakingly extracted from the audio by old-fashioned ear. Question is, in a progression submitted for the iRB library, how strong is the expectation that it will display all and only the chords of the tune as originally published? A corollary question is, would it be worthwhile/appropriate to attach info as to its origin, to the tune itself (as opp to the e-mail message submitting it) -- e.g. "BIAB" or "l.f." or "o-f-e."

Sorry if this has already been dealt with-- I've looked but not found it anywhere.