The theme that plays in the main menu (a different version plays while you're selecting an event). Also, as of this upload, you've got 2 weeks before the online shuts down for the 3DS and Wii U consoles. (And I know this isn't gonna get many views on here but it's good anyway)
From bgm_streamfiles.awb, and this is track 6.
Sample Rate: 48000 Hz
Loop start: 82623 samples
Loop end: 14104918 samples