To be able to access the Vanessa Song Select BGM (and the BGA that goes with it) in Free Mode, obtain Vanessa as an extra stage.
To be able to access the VIP Room in Free mode, unlock the Vanessa Song Select BGM/BGA and obtain the VIP room three times, and play once in each of the three rooms. (you do NOT need to clear the songs, only unlock the frames obtained from them)
To use the Vanessa Song Select BG/BGM and access VIP room in Free Mode, hold START+SELECT before the game begins loading the song selection screen (I.E. before selecting "START" from the submenu in Free Mode or "Music Select" from the results screen)
When selecting CROSSROAD from the song selection screen, hold the SELECT button and quickly keep rotating the turntable clockwise wilhe the play screen loads. You should be able to play CROSSROAD ~right story~ with the japanese vocals by Jun instead of the default ~left story~.
Obs: If using the DUALSHOCK2, hold SELECT and RIGHT on the D-pad while the song loads.
To unlock Vanessa as your extra stage, clear and get at least a AA on all 3 of your songs in Standard mode without using Random [yes, all 3 songs may be played on Normal]. Your songs must be in ascending difficulty [i.e. 4, then 5, then 6], but if they are not, you must get a AAA on your final stage [while still attaining at least a AA on your first two stages]. To find out what difficulties are available for you to play Vanessa extra stage on, add up the total number of the difficulties of the 3 songs, and the difficulties that will be available to you are as follows:
If the sum of all your songs difficulties is 10 or more, you can play VANESSA on Normal.
If the sum of all your songs difficulties is 20 or more, you can play VANESSA on Hyper.
If the sum of all your songs difficulties is 30 or more, you can play VANESSA on Another.
In Standard Mode, achieve an extra stage using only the songs that are 5 key revivals. Doing so will make The least 100 sec playable as an Extra Stage. Play it to unlock it permanently.
In addition to normally qualifying for an extra stage, there are special conditions that, if met, will qualify you for special Extra Stages (and, possibly, One More Extra Stage).
(notes: in Doubles, the difficulty requirements are lowered. "assist clears" mean that 5-key or AutoScratch were used when clearing)
Unlockable
How to Unlock
Black Room: "Sense 2007 [A]"
Hard Clear the Silver, Gold, and Platinum rooms in the VIP room with an A-rank or above on Another. "Double Battle" and Random must be off.
One More Extra Stage "Fascination MAXX [A]"
As an Extra Stage, Hard Clear Vanessa [A] with an A-rank or above. "Double Battle" and Random must be off.
The Least 100 seconds
with Hard on, use ONLY BeatMania revivals to qualify for an extra stage.
Vanessa [A]
AA three charts totalling 30 or more in difficulty. no assist clears permitted, "Double Battle" and Random must be off
Vanessa [A] & VIP Room
In Single Player, qualify for Vanessa [A].
Vanessa [H]
AA three charts totalling 20 or more in difficulty. no assist clears permitted, "Double Battle" and Random must be off
Vanessa [H] & VIP Room
In Single-Player mode, AA three charts totalling 21 or more in difficulty. no assist clears permitted, Battle and Random must be off
Vanessa [N]
AA three charts totalling 10 or more in difficulty. no assist clears permitted, "Double Battle" and Random must be off
VIP Room
In Single-Player, clear three charts totalling 21 or more in difficulty.
In Standard mode, enter the V.I.P. Room and hard clear each room's another with a grade of A or better to earn it's VIP card. Once you have all of the VIP cards, you will be given immediate access to the BLACK ROOM, and Sense 2007 will appear as your One More Extra Stage. Unlike DistorteD's Cardinal Gate system, however, failing a VIP room song will not revoke your VIP cards.
Select and hard clear VANESSA as your Extra Stage in Standard mode with a grade of A or better on Another. Fascination MAXX will appear as your One More Extra Stage.