Just a Thought...

Listen to this clip of 'Like A Virgin'...

I have to agree with what the video is saying here. If you listen to the other songs on the like a virgin CD her voice is much lower in all the other songs... i.e. Over and Over, Angel, Dress You Up... Her voice was obviously altered for the 'Like a Virgin' recording.  I think that the same technique was used on 'Into the Groove'  and 'Lucky Star'.