Alright.
I can understand the mellow feel, but the melody reverberates a bit heavily to me and gives takes away from the. And I thought of the M*A*S*H theme song at 0.37 haha. I would have (when I say I would have I mean if I had your ability) slowed it a bit more in certain stages, and given the drums the chance to fade out alone, to give a sense of a patient's heart beating out. As a matter of fact your Surgeon songs are ambiguous in the sense we never know if the patient makes it. I would say (you prolly are already) make one where he loses his patient, that could go on for so long too, an epic!