I remember your Shooting Star MV reaction. You were so impressed that you had to watch it again. SS is the song that made me Stan. I love that you are revisiting what I think is XG's signature song.
I love how XG makes everyone smile - even on reactions - and everyone's smile are so addictivie - makes my day a sun shiny day - thank you and thank god for XG !.
about the songs being made years before they are actually released, it's almost all is like that for the songs you hear for every kpop groups out there. These songs are in some composers library for years as demos and such until one day being use, adding vocals and mastering for an artist.