Analysis of information sources in references of the Wikipedia article "A Day in the Life" in English language version.
Paul's main vocal track is in stereo, because we gave it some spread with the Waves S1 Stereo Imaging plug-in, so it has a different sound than John's lead. We also split off two little bits to be able to pan them left and right. His fourth vocal track is the 'aaah' section, and below it is an 'Aah delay' aux track.