How do you get students to think critically about two texts? Make the texts song lyrics!
This "Lessons with Lyrics" is a comparative study of Elton John's Rocket Man and David Bowie's Space Oddity. It contains links to the songs, song lyrics, discussion questions, and an answer key in a PDF file.
I also provided quite a few links to videos that might be worth checking out with your class at the end of your lesson, as a deeper look at the influence of these songs can lead students pretty far down the rabbit hole of research.
Be sure to check out my other Lessons with Lyrics resources, and happy teaching!