If
you have decided that your song should utilize a Pre-Chorus,
there is a standard rule that you should be aware of. Each
time the Pre-Chorus comes around, you must use the same melody.
The standard is somewhat less rigid when it comes to the lyrics,
however. While typically the Pre-Chorus uses the same lyric,
it considered OK for you to introduce a new lyric each time
the Pre-Chorus comes around.
