Before the EKGs we know,
Cardiologists devised machines,
So patients' heartbeats could be seen.
And now, in a neat turnaround,
The traces can be turned to sound,
And one can hear the hearts of men
Who lived and flourished way back when...
We're used to find out from afar,
What happened once to distant stars.
Now we can hear the hearts of yore
That beat a hundred years before...