1. If the lyrics are not clearly expressed as subject components, the objective case can be used.
2. When people appear as a sentence alone, use the objective case.
For example,
-Who broke the glass? Who broke the water glass?
-Me. Me.
So you and I are the title of the song, you and I appear alone, and you are also an accusative.
3. It rhymes with the objective case and the kotaro oshio rhyme of the following family, but I don't rhyme, so I want to look good aesthetically in the lyrics. So many English poems end with me.