"Chia-Jung Tsay’s analysis of classical musician auditions explicitly drew on this idea by providing participants with only 6 second clips of each performance."

Speaking as someone who studied violin in college, this is absurd - you can't judge an entire audition based on a 6-second clip. Was any effort made to ensure that the clip was representative of the entire performance?

Also, a video can give you an idea of the musician's technique, which for many instruments is probably worth a lot more than an arbitrary 6 seconds of audio.