Nearly all lead vocals are live but they always have the track if the artist wants it. All background vocals are track, all band is track but sometimes a solo instrument or two will be live. Prince's guitar was live for instance. The only band that has ever played half-time totally live is The Rolling Stones.
I didn't think that was a catch and was real surprised it wasn't overturned. But I love seeing one go against the pats for a change.