Here's one for you.

We perform "The Sacramento" with great regularity and have for many years. One Friday, after an all day school gig, we went to an obscure winery to do some tasting. Their idea of "tasting" was to get us thouroghly drunk. Then we went into the cave where they age the wine and the winemaker wanted us all to sing "The Sacramento" in there which we did. The trouble was, he used a different tune. After that, it was months before we could get the tune right again and the only way we did it was to listen intently to a recording of us doing it before the fateful trip to the winery.

Bev and Jerry