I have made two different videos for Rhesus 4. The first, features the video for the first improvisation, shown in a sepia tone. The viewer's ear will naturally focus on the guitar panned right, because it is consistent with the visual cues. That video is shown here:
Note, however, that the audio in both of these videos is identical, so the psychoacoustic focus is simply an "aural illusion" caused by the fact that your brain is watching something that syncs-up with the guitar part in question.