Blues

1 : low spirits : melancholy, "suffering a case of the blues"
2 : a song often of lamentation characterized by usually 12-bar phrases, 3-line stanzas in which the words of the second line usually repeat those of the first.

I got to keep moving, I got to keep moving
Blues falling down like hail, blues falling
down like hail
Blues falling down like hail, blues falling down
like hail
And the days keep on 'minding me
There's a hellhound on my trail

"Hellhound on My Trail", Robert Johnson