male tenor, cracked and sincere

Horizontal Gaze Nystagmus  
Please stand with your heels and toes together, and your arms at your sides (demonstrate). Do not do anything until I tell you to. Do you understand? I am going to check your eyes. Please remove your glasses. (If wearing any) Are you wearing contact lens? Please look at the top of the stimulus. Keep your head still and follow the top of the stimulus when I move it. Only move your eyes, not your head. Do you understand?  
Walk and Turn  
Please stand with your heels and toes together, and your arms at your sides. (demonstrate) Do not do anything until I tell you to. Do you understand? Please put your left foot on the line. Now put your right foot in front of it, with your right heel touching your left toe. (demonstrate) Do not begin until I tell you to. Do you understand? When I say "begin", take 9 heel-to-toe steps down the line, turn around, and take 9 heel-to-toe steps back. Make your turn by keeping your front foot on the line, and then use your other foot to turn yourself around with several small steps. (demonstrate) Keep your arms at your sides at all times, watch your feet and count your steps out loud. Once you begin, do not stop until you have completed the test. Do you understand?  
Begin.