premise: Collins Hickey Johnston (August 29, 1859 – December 29, 1936) was an American football player, medical doctor, surgeon, and civic leader in Grand Rapids, Michigan. He was a graduate of the University of Michigan where he played college football for the 1879 Michigan Wolverines football team, the first football team to represent the University of Michigan.
hypothesis: Collins Hickey Johnston would only listen to the Mozart when completing heart surgery, and rock and roll when completing brain surgery
reason: There is no real way to verify what he may have listened to when completing surgery, so it's hard to say if it is definitely correct or incorrect