Sometimes the singer's diction (or the recording engineers lack of knowledge) causes changes. In "The L&N Don't Stop..." I sing, "Now they're standin rusty, rollin empty." People listen to the record, and sing what they heard, "Now they're standin rusty, rowed-up empty," or, "Now they're standin in a rusty row all empty," or I've even heard, "Now they're canned 'n musty, more are empty." This could be cured by included printed lyrics with the recording. Probably the singer's diction shouldn't be messed with- it'd take the "folk" out of it.