Rumors about a new Madonna album have been circulating for months. On Thursday, more evidence of a forthcoming record arrived, as 44-seconds of a track purportedly called “Rebel Heart” leaked online. (Madonna repeats the phrase “Rebel Heart” at the beginning of the clip.)

Release of the song snippet, which sounds like it was recorded off a speaker, was not sanctioned by Madonna’s management. Here’s Guy Oseary, Madonna’s manager:

I would be grateful to any @madonna fans that can assist us in finding those responsible for the leak.. We appreciate your help..

— Guy Oseary (@guyoseary) November 28, 2014

As Billboard noted, the track could be a collaboration between Madonna and Avicii, as she had posted a photo to Instagram featuring the producer and DJ with the hashtag “#rebelheart” nine months ago. Or maybe that’s the name of the possible album: Madonna has used the “#rebelheart” hashtag on many photos, including one from earlier this month of Chance the Rapper.

For more, head to TheWrap.