Who knows. All we know is that an orchestra is involved. The Barcelona orchestra project turned out pretty bad so I'm not getting my hopes up if it has something to do with a different version of an existing song.
If it is used with new material, lets hear it!
brian has a picture of him overdubbing his guitar and mentions how the position of his left hand may be a clue to what he's playing so its an already existing track and its apparently an A Flat he's playing link
this is for anyone with a good guess of the song
Likely recording versions of tracks as they were performed at Starmus. I just pray that the opera singer with absolutely no idea of either timing or nuance who wailed all over them at the gig is kept well away.