MAS - Your order of levels?

Just out of curiosity, in what order do you play the levels, and why?
Also, since it seems to be tradition for this kind of topics, here's my own answer:

Nifflas Forest, Gryphon Forest, Music Madness, Zepsi Industries.
I do this because Zepsi Industries is like a final boss's giant castle, and Nifflas Forest is like the protagonist's home. And also because of the challenges getting harder and stuff. That is also the reason i played this game in the order crystal, sky, earth, plant.

I usually play Music Madness first because when I come out of the pipe into the level select area I always happen to fly right into the Music Madness pipe. Next would probably be Zepsi Industries, then Nifflas Forest, and finally Gryphon Forest.

I don't remember which pipe I started on, but after that I just didn't press any controls on the level selection screen and the ball bounced into all of them one by one!

music madness, gryphon forest, nifflas forest, zepsi industries.
the order goes from hardest boss to easiest boss.