I cant speak for every orbit but I personally love songs that I can just close my eyes and vibe to which is what made me fall in love with Loona back in the day. Butterfly Effect is my fav song on the album for that very reason. There are a bunch of references in the songs lyrics to the original Butterfly by Loona and the lyrics you can tell are very meaningful. It also has such a beautiful choreo that I cant wait to see live in september. Overall this project is currently my favorite of the year and its gonna take a lot to beat it. It really made me feel how I felt when I first discovered Loona years ago.