The pop icon admitted that she was surprised by the similarities between her own 1989 hit 'Express Yourself' and GaGa's 2011 single 'Born This Way'.
Speaking about the first time she heard GaGa's track, Madonna told The Daily Beast: "I thought, 'What a wonderful way to redo my song'. I mean, I recognised the chord changes. I thought it was… interesting."
The 'Poker Face' performer has previously branded claims that 'Born This Way' sounds like Madonna's hit as "retarded".
GaGa has also denied rumours that the pair are in an ongoing feud and named Madonna as a "wonderful influence" on her career.
She added: "I feel blessed to have grown up with a powerful, blonde woman to show us the ropes."
Madonna recently announced that MDNA will be the title of her upcoming 12th studio album, which is due out this spring.
> Madonna discusses Lady GaGa rivalry on 'Nightline': Video preview
Watch the video for Lady GaGa's 'Born This Way' below: