Slash, "We're All Gonna Die" (2010)
The guest list on Slash's first solo album, Slash, is way more imaginative than its title – Ozzy Osbourne, Adam Levine, Fergie, Kid Rock and a bonus track featuring an Alice Cooper/Nicole Scherzinger duet. And then there's Iggy. It wasn't the first time Slash and Pop had worked together – along with his Guns 'N Roses bandmate, bassist Duff McKagan, the guitarist played on Iggy's 1990 album Brick by Brick and wrote the music for "My Baby Wants to Rock and Roll." On the chorus here, Iggy suggests different ways we should logically behave once we accept our universal mortality: "So let's get high" but also "So let's be nice," though neither of these seems to excite him nearly as much as the opportunity to "Pee on the ground/And jump around."