Singer Madonna's latest track 'Rebel heart' has leaked online, and fans are less than impressed with the song.

Madonna has been hashtagging #rebelheart in her Instagram photos for months. The track was produced by Swedish DJ Avicii and recorded around March.

A Twitter account named @RebelHeartLeak claimed it would be leaking the song soon after it was recorded and described the track as a "mid-tempo song with pulsating electronic beats, ambient trance, and an underlying melody influenced by guitar".

The account has since been deleted and is not believed to have been involved in this latest leak which came about Thursday, reports mirror.co.uk.

Fans weren't overly impressed with the clip and one posted on Twitter: "RebelHeart snippet leak. Same old, boring introspect lyrics. Terrible vocal. Hoping that's a demo run. The music itself sound ok, meaty".

Another tweeted: "Bad lyrics! But music sounds good. A Snippet Of Madonna's rebelheart Has Leaked."

Madonna is yet to comment on the clip.