Bob Dylan borrowing more phrases--this time from Civil War era poet

I agree. Which is why I think it's acceptable if Dylan wants to give himself a solo writing credit for "Rollin and Tumblin" and "Someday Baby" - even though both are pretty much standards in the blues repertoire, his new verses and other modifications are enough to qualify them as "new" songs within the standards of the genre. On the other hand, you have the Rolling Stones suing the Verve's "Bittersweet Symphony" off the face of the earth because of the relatively tiny amount of copyright infringement in that song, so who knows where the line is drawn these days. All I'm saying is that without Muddy Waters I doubt anyone would be recording versions of those songs today, especially not versions that sound like that.

My dad referenced the Alicia Keys lyric in an iMessage chat today; I had totally forgotten about it.

(this was the only thread I could find on Modern Times)