Oh god, the nostalgia trip! Never got far in the first game, but thanks to soundtracks and the theme being used in other games, I was able to figure it out. I recognized a few of the songs in the 2nd one, which helped me figure it out, based on what jonny said after the first song. Thanks for reminding me that the Third game exists. Got it really quick after a mental flashback! Also, I got the 4th game by only playing the demo on the eshop. Thanks for putting level 1 as song 3. I still haven't opened my limited edition copy of the 5th game but I was able to figure out because I have played its operation rainfall counterpart, xenoblade, and knew it wasn't that.
5 out of 5! Yeah!