The most anticipated tracks from Queen's forthcoming album, Queen Forever, are the duets between Freddie Mercury and Michael Jackson.

Roger Taylor has confirmed that the Jackson estate is holding the tracks hostage for now:

"Yes, if we could get a decision from the Michael Jackson estate, who seem to be, well, difficult,". "William Orbit did a really nice mix of one of our tracks with Michael and I'm pretty certain that will be on 'Queen Forever.' But it's been like wading through glue."

One single, "Love Kills," has been released from the album this summer while the band was on the road with Adam Lambert.

They hope to have the album completed by Christmas, although Taylor cannot promise a specific release date.

"I'm not quite sure what's on it yet," he continued. "We've got some great new tracks that haven't been heard and there's an interesting selection of older stuff."