Some keep the Sabbath going to Church — I keep it, staying at Home —
With a Bobolink for a Chorister —
And an Orchard, for a Dome —

What elements of ballad structure appear?

The first and third lines rhyme and have the same number of syllables.

The first and second lines have the same number of syllables.

The second and fourth lines rhyme and have the same number of syllables.

Each line ends with a dash, and the second and fourth lines rhyme.