Leot55, I've seen rappers do that too, and I was upset by it. T.I. is one of the last truly fast rappers, but I was startled when I realized he was rapping with a full pre-recorded tape in concert when singing Dead and Gone. I expected that Justin Timberlake's part would play through the tape, but not T.I.'s rap. It was obvious when he'd get winded and need to take an extra deep breath, but the rap would continue as usual when there should've been obvious pause due to his breathing. What's worse is that he wasn't running around on stage or dancing or doing anything that pop idols do that somewhat give them an allowance for using pre-recorded vocals. It was just so lame.