"My new single Applause is out today and can be heard on US radio in 15 minutes. International radio to follow," she wrote.
Listen to Applause:
Although Gaga was initially upset by the leak, she is now taking it in her stride.
The star is grateful for her fans and is excited about people listening to her new music.
"I Love being a popstar! We are cheering for you monsters, standing ovation for the worlds most amazing fans!'' she tweeted.
"Im on the radio i can't believe it! It feels like the first time! Thank you so much for your *Applause,* We are so happy you love it!''
Gaga will debut the single live at the MTV Video Music Awards at the end of this month.
The August 25 performance will mark a major triumph for the singer, who underwent hip surgery in February to treat a hip break, a labral tear and severe inflammation of her joints.
ARTPOP is due to reach shelves in November.
- Cover Media