Ultramix 2 uses the Xbox internal clock for giving the announcers a bit of personality. When the game was released back in 19, November (I'm serious), people were reporting that they were hearing the announcers make a Thanksgiving-related comment when they started up the game:
"Let's burn off that turkey!"
"Those leftovers are taking their toll!"
And for the late-night DDR players, the announcers would also comment about how late or how early you were playing. The game could also tell the day of the week, usually just for the weekend.
And if that wasn't enough, on December 19th, the game notifies you of Jennifer Beal, star of the hit movie Flashdance!
Try setting your Xbox at different dates and times. Don't worry if you don't hear anything the first time around. Just enter and exit out of a mode.
Songs unlocked by playing a certain amount of songs:
Midnight Special - Play 20 songs.
Gyruss ~Full Tilt~ - Play 50 songs.
.59 Remix - Play 70 songs.
In My Eyes (Midihead Remix) - Play 100 songs.
G2 - Play 200 Songs.
The game was coded in a manner so that playing a song on one difficulty counts as one song. To unlock G2 easier, play all of the songs on one difficulty, then play them all again on another difficulty.
Songs unlocked in a special manner (i.e. acquiring a certain grade, playing in a certain manner). Do not use Beginner mode:
Zero-One - AA any song on Light, Standard, or Heavy.
.59 remix - A every song credited to Jesper Kyd ON HEAVY (Istanbul Café, Red Room). Do not use the LITTLE modifier.
Toe Jam - A every song credited to Big Idea ON HEAVY (La Cucaracha, Monkey Punk, Baile Le Samba). Do not use the LITTLE modifier.
Make a Jam! (Dub/House) - Pass Make a Jam! on Light, Standard, and Heavy.
i feel... (T.O.Y. Remix) - Using a normal Xbox controller, enter Options mode, and enter the Credits sequence. A minigame will shortly show up. The goal is to hit the arrow pattern as you see it, just like in the normal game. THERE ARE NO TIMING ISSUES. JUST HIT THE ARROWS. If you miss, wait a moment for the next pattern to show up and stop glowing (about 4 seconds should pass). You must score more than 12000 points.
In My Eyes (Midihead Remix) - This method has not been confirmed, but fail a certain amount of songs on purpose (maybe 10 songs).
MAX 300 (Super-Max-Me Mix) - Pass Maxx Unlimited on Heavy!
If that's too hard, just AAA any song. Don't use the LITTLE modifier to get the AAA though. I'm still serious about the first prerequisite though.