Reports that Graham Nash and David Crosby added vocals to a David Gilmour-penned track for Pink Floyd's forthcoming 'Endless River' project are being called into question.

The Pink Floyd news site Brain Damage has reported that a source close to the band says the track Nash and Crosby sang on is instead intended for a Gilmour solo project, and not the new Floyd LP.

Regardless of where it turns up, after reading Nash's description, we can't wait to hear this track. "We went down to sing on this particular song that he wrote about friends that had died," he reveals in a new talk with VH-1 Radio Network’s Dave Basner. "It’s a beautiful song, too -- beautiful."

Gilmour and Nick Mason have been at work since late last year completing ambient, primarily instrumental music begun during the late Rick Wright's final early-'90s sessions with Pink Floyd. Lyricist Polly Samson, who has collaborated with her husband Gilmour on a series of projects, described 'The Endless River' as Wright's "swansong."

Wherever the track appears, it won't be the first time that Nash and Crosby have been involved with a Gilmour project. They also sang background on the title track for his 2006 solo album 'On an Island.' "I’m hoping that it’s as good as 'On An Island,'" Nash tells Basner of the new collaboration, "because I thought that that song of Gilmour’s was not only a brilliant song, but I thought we sang pretty good on it.”

Rumors that Graham and Nash were working with Gilmour first circulated last November It was assumed back then that the sessions would be part of a planned 'On an Island' follow up -- and that indeed appears to be the case. 'The Endless River' is due in October.