Lady Gaga's "Born This Way" and Madonna's "Express Yourself" - The Remix!
If there were any doubt that Lady Gaga's "Born This Way" was inspired by Madonna's "Express Yourself," well, this remix should clear those doubts up.
Not that it matters, of course. Madonna supports the song and Gaga couldn't be more adamant about her adoration of the Queen of Pop. There's no feud.