Bono re-records Joshua Tree demo vocal

Bono has re-recorded his vocal for a demo of the song 'Wave of Sorrow', an offcut of 'The Joshua Tree' album reports Undercover.

At u2.com, Bono explained that the song was one of the unfinished tracks from the album and that it was "a song that was trying to describe experiences that myself and Ali had when we were working in Ethiopia during the famine."

The new version of The Joshua Tree is out this month.

For 2008, there is already talk of a new U2 album, possibly for a Broadway musical or maybe even both a studio record and a Broadway recording.

U2 are romoured to have written 20 new songs for a Broadway show based on Spider-Man.