there are always the inadvertant changes - read the words on the insert & see "the" - listen to the track & hear "a" but there are also deliberate changes that are a different matter.

Some years back a group decided that the song would be better with 2 verses reversed. The writer objected as it changed the sense of the story, but they carried on doing their version. They added insult to injury when one of the group booked the songwriter at their local club, & introduced the guest, asking him if he would be doing this song. No, he said, oh good, they said we can do it! (The final straw was near the end of the gig when they asked the guest how many songs he had left, 3 - just do 2 cos we want to hear one of the floorspots again!)

sandra

oops, I almost forgot the most common source of change - mondegreens!