A track from Cold's first album, "Insane" is about drug abuse, and how even the purportedly sane people out there have their own problems. In this case, lead singer Scooter Ward's problem is drugs and their hold on him. He wants the more privileged to stop using as well: "Can you give back to God what brought you here."
Ward spent the next 10 years fighting his addictions. Many subsequent Cold songs deal with those struggles.
When "Nothin' On You" reached #1 on the Hot 100, B.o.B became the first American act whose name is a palindrome to top the chart. The other two who did so prior to the Atlanta rapper were both Scandinavian groups - ABBA and A-Ha.
"The Night Chicago Died" was written and recorded by the British group Paper Lace. They talk about Al Capone in the song, but got a lot of details wrong - understandable since they wrote it based on gangster movies.