Just heard this song for the first time today and can’t turn it off. It’s pretty much perfect for a montage scene. At least I think so.
So the writing exercise? Wherever you are, stop. Turn this song on and listen. Listen to it and develop your montage. If you are on the street, you have a stock load of characters just walking by. Maybe everyone within your vicinity is connected in some way. Sounds like great montage fodder to me. But wherever you are, stop, listen and then write a montage.