I've never really had much interest in bluegrass music itself, but some of the so-called "alternative bluegrass" groups have caught my ears.
I very recently stumbled across Punch Brothers and have been listening to their album, Who's Feeling Young Now?
, for the last week.
"Movement and Location" is astounding, just for the range of what can be done with acoustic instruments - mandolin, fiddle, banjo, guitar and double bass.
Their song, "Patchwork Girlfriend", is amusing . . . perhaps especially for people interested in non-monogamy. At the very least, it suggests how complicated even monogamy can be, depending on who all is involved.