Joe Satriani is suing Coldplay over their Grammy-nominated song "Viva La Vida," which he says copies "substantial original portions" from his "If I Could Fly," a love song written for his wife.  "I felt like a dagger went right through my heart.  It hurt so much," Satriani reportedly told MusicRadar.com of the moment when he first heard "Viva La Vida."  As of December 4, it will be up to a jury to decide if the song was ripped off or not.