I change our church music around all the time, and sometimes I have to if I am going to take pieces originally meant for concert performance, like bluegreass gospel, and use it in a church-authorized setting.

The changes can be minor or major-- and I print, on the songsheet, what I have done. If I have just edited a bit and added a verse, I say so, but if I have done more, I say I have adapted it from the original, or that it is based on such-and-such. Not only do I think this is fair to the original, I think it's fair to stake my claim to credit (or blame) for my own "artistic contribution." And it's accurate as well as thoughtful of the historical record-- if you find one of my songsheets in 50 years, in print or posted here, I don't want you to think I had miraculously found an otherwise-undiscovered "original" verse no other collection includes for that song!

~Susan