Good one.

I have heard/read a series of very similar jokes, but they are all about golfing.
Here's one back at ya.
A Sad Story
As a bagpiper, I play many gigs. Recently I was asked by a funeral director to play at a grave side service for a homeless man. He had no family or friends, so the service was to be at a pauper’s cemetery in the Texas back-country.
As I was not familiar with the backwoods, I got lost; and being a typical man I didn't stop for directions. I finally arrived an hour late and I saw the funeral people had evidently gone and the hearse was nowhere in sight.
There were only the diggers and crew left and they were eating lunch. I felt badly and apologized to the men for being late. I went to the side of the grave and looked down and the vault lid was already in place. I didn't know what else to do, so I started to play.
The workers put down their lunches and began to gather around. I played out my heart and soul for this man with no family and friends. I played like I've never played before for this homeless man. And as I played 'Amazing Grace,' the workers began to weep. They wept,I wept, and we all wept together.
When I finished I packed up my bagpipes and started for my car. Though my head hung low, my heart was full. As I opened the door to my car, I heard one of the workers say,” Sweet Mother of Jesus, I never seen nothin' like that before and I've been putting in septic tanks for twenty years."