Iggy Pop had descended into dark place marked by heroin addiction and the dissolution of his band, only to have David Bowie come to the rescue by helping get the Iggy and the Stooges a new record deal and producing the album. On the resulting Raw Power LP, James Williamson's buzzsaw guitar replaced Ron Asheton's primal blues licks, and Iggy moved lyrically from playful and scary to aggressive and lurid. "I created 'Penetration' at Williamson's mother's house one afternoon," Iggy recalled. "From that riff and that vocal I was able to conjure with it." The two "conjured" the rest of the album after this song.
Only the genius of Tom Waits could combine the subject of mortality, a reoccurring theme in his work, with wordplay that name checks both Mick and Keith, whom he calls "Mr. Jagger" and "Mr. Richards," and the title of their magnum opus, "Satisfaction." And to show just how cool Waits really is, he even got Mr. Richards to play along, one of nine guest appearances the guitarist has made on three Waits albums. "This growling roadhouse stomp is a late-breaking response to the Stones' greatest hit," Rolling Stone said of the track.