Lady GaGa previewed her new single to fans by blasting it from her SUV.
The 'Alejandro' hitmaker is currently working on her new album and although she hasn't given a release date she decided to treat her Little Monsters to a taste of what they can expect when she played the new single loudly from the vehicle in a parking garage.
One fan wrote on twitter: "I asked her if it was the new single she looked at me and shook her head yes and said shhhhh."
According to Gaga's fans, the as yet untitled song is "a very heavy dance/club song".
Another person tweeted: "YOU GUYS THE SONG WAS F--KING PERFECT. IT WAS A VERY HEAVY DANCE/CLUB SONG!!! THE BEAT WAS F***iNG INSANE!!! (sic)"
Meanwhile, Madonna recently made another jibe at Lady Gaga.
The 'Celebration' singer claimed she is a big fan of the younger pop star's track 'Born This Way' - which has previously been compared with her hit 'Express Yourself' - because she "helped to write" the song.
She said on Brazilian TV: "I'm a really big fan of ['Born This Way']. I'm glad that I helped Gaga write it."
Madonna - who has performed a mash-up of 'Born This Way' and 'Express Yourself' during her 'MDNA' gigs - has previously claimed Gaga copied her track.
She has said: "I thought, 'What a wonderful way to redo my song'. I mean, I recognised the chord changes. I thought it was... interesting."