Why Ernesto's guitar stayed in the hall closet for a year after 1987, and the song that brought it out again.

The story
“When his brother died in Jalisco and he couldn't get there in time, he put the guitar away and didn't say why. A year later to the day, he took it out and played the song they used to sing as boys, once, all the way through. He said a song is just a letter you can't send.”
How it came down to us
Marisela was there, at seventeen. She told it at his funeral, and her nephew Daniel wrote it down afterwards.
What people disagree about
Which song it was. Marisela says one; her brother says another. Both of them can play both.