David Maron, MD, is a clinical professor of cardiovascular medicine, board certified in internal medicine, cardiovascular disease, and clinical lipidology. What you may not know, however, is that his impressive resume is leaves out one crucial skill: crooning.

Maron is the co-chair of Stanford’s Ischemia trial, which is nearing the end of its recruitment phase with a nearly-reached goal of at least 5000 participants. They want more to surpass the goal, and ask for more signups.

But don’t take our word for it: let Maron’s dulcet tones implore you. It’s an Elvis parody that somehow captures the desperate melancholy of the original while translating its message of waiting for love to waiting for patients for a clinical trial:

“It’s now or never, I ask each site / Enroll one patient before tonight,” he begins. And that’s the easy lyric—you try saying “Atherosclerosis is a common diagnosis” and following it up with “revascularization is routine in your nation.”

And how does it end? The only way it could: with a sincere, rock and roll, “Thank you very much.”