I've heard it said that Martin Luther condemned the use of pipe organs, saying that they were somehow evil.
What is the source for this quote? Or is it falsely attributed to Luther?
Might this be your quote?
This phrase turns up 1,400 results in Google; but it may not be accurate.
One researcher, apparently familiar with Luther and this quote, had this rebuttal:
Searching Google for the quote with "ensign" instead of "insignia" turns up 7 results. This suggests widespread dissemination of the (mis)quote without checking sources. (This is possibly the encyclopedic source, though it's certainly not word-for-word; thanks @James T)
The source mentioned above had more to say on the topic:
With a creative search query, I determined that 98% of the online sources for this quote reference the same Martin Luther encyclopedia referenced above.
Another possible source for this saying is Heinrich Eckhard's Fasciculus Controversiarum Theologicarum where he states,
Which a 19th century author translates as:
A few problems, though: @James T's source suggests that "organa Musica" is better translated as "instruments of music." Further, Eckhard isn't even himself the original source of his statement.
As we trace this quote back, we go from one shaky source to another (as the "quote" changes) until the internet trail peters out at "Anhaldini p. 74"