It's a Willie Nelson song:
This seems to be one of the most popular covers:
That ain't no stupid question!
I posted this on huw's visitor page this morning:
In Night Life, where the chart says A-Am, I play:
A7, A#dim, Edim7, Gdim7, A#dim7, walking up the board on the four high strings. The latter resolving to E sounds great, and now I understand why - on an intuitive basis. The A# is not a IV yet not a V, so it's a teaser - an unexpected tone to be hung on, yet still drops like a rock back to the root, which it also includes.
And, despite always going up in pitch, in the scale it's teasing you towards the V, back down to the I, then the iii, then
almost to the V again - squirm, lose your balance, and fall back to the root. Neat shit.