The students were roughly split down the middle about which recording was the master musician. They made excellent critical observations about both versions, often stating that they had a preference for one or the other. After a vigorous discussion, some of the the students actually changed their minds about which recording was which.
We listened again. Some of the students were even more firm in their resolve about which recording was the actual virtuoso. Although there was no consensus, there did seem to be a bit of a "group think" effect that caused some of the students to change their minds. One student even admitted that he was having a hard time discerning the student from the master, and that he was vacillating back and forth.