The word harrow in this passage means that the writer could narrate a story so hunting that will agonize your soul. A story so twisted that even the lightest words will sound hunting to the reader. The word harrow up, in this case, can be a synonym of <u>torment.</u>
Ridin' high, when I was king
Played it hard and fast, 'cause I had
everything
Walked away, wonderin' then
But easy come and easy go and it would end
