It has to do with context, how it is presented in the program.


For example, if you do a Civil War program and you include "The Unreconstructed Rebel"
or the "Bonny Blue Flag", these act as a historical reference and you can follow them with
"Rally 'Round the Flag" or "Marching Through Georgia".


Sometimes it can be done tongue and cheek and if it's really not to your liking,
I have no problem in changing the words if the sentiment is disagreeable but the song
has potential.

Sometimes I will deliberately parody a song if I really don't like it.