Typhoid Mary. Although she was not a prisoner, and was permitted to travel to New York City, after being rearrested in 1915, Mary Mallon would spend the rest of her life in isolation on North Brother Island.
A key line in "Africa" is "I seek to cure what's deep inside, frightened of this thing that I've become," which is about drifting away from what you really want in life. Toto keyboard player David Paich, who wrote the song, felt his work was consuming him.
Will.I.am, literally dreamt up "I Gotta Feelin'." Said the Black Eyed Pea: "Have you ever had a dream where there's a melody in your dream? I'll wake up out of my sleep and record that! 'I Gotta Feelin' was one of those songs."