It took me a while until I actually found "Imagine" by Brunch. After I also saw the lyrics of the song I was amazed (it's the song that plays in the final step).
You may have noticed that he sometimes said "John". It's because this is just another answer to Elton John's song "Imagine". :)
And today at work I couldn't stop thinking about the song in step four. I just love things that follow me through my days.