hey guys....do you know what is the real meaning of the song?..WE ARE NOT LOOKING AFTER ON THE SONG ITSELF BUT THE MEANING BEHIND THE SONG FOR GOD'S SAKE!...we should not look after who'se the singers behind it, what kind of genre they made it, the most important thing in the video is they had contributed kindness just to sing the song and to bring people around the world to unite not impressing their fans or anybody..i don't care whose the singers,they all did fabulous..!any singers who can sing the song,i would appreciate it so much..as long as the song comes from your heart,..the song is one of a kind!..