Officer Berri
Cousin Redd's Nightmare
I made a version of Terra's Theme from Final Fantasy 6 my town tune in my Wild World town. I still love it. xD Will probably use it in New Leaf.
I went for a Sonic theme in mine, one of the old first level tunes.
I did Green Hill Zone on the Gamecube version and Emerald Hill Zone in ACCF, so I might pick another Sonic song for ACNL
EDIT: Reach For the Stars from Sonic Colors is actually a splendid idea...