Does DDR A have any time sensitive unlocks in the Extra Savior / Stage?

I just got Babylons Adventure and I wanted to know if there are any songs in there that might disappear / had been there for awhile

For now, NEW CENTURY was moved to FINAL STAGE.

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not at the moment

OK so, I tried to make a list of all the songs unlockable in DDR A

Poochie and この青空の下で & Possession (EDP Live Mix)
(3)

+

https://remywiki.com/AC_DDR_A#EXTRA_SAVIOR
(5)

https://remywiki.com/Hakken!_Yomigaetta_BEMANI_iseki#DanceDanceRevolution_.282014.29
(6)

https://remywiki.com/Nettou!_BEMANI_Stadium#03.2F19.2F2014_Update
(16?)
https://remywiki.com/Kaitou_BisCo_no_yokokujou!!#DanceDanceRevolution_.282014.29
(4)

https://remywiki.com/BEMANI_SUMMER_DIARY_2015#Unlockable_Songs
(4)+
Sakura Sunrise + Delta Max? (2)

I figured it out.

Including Extra Exclusive songs, there are 48 songs not in the default songlist, if you're a brand new eAmusement player.

Wait, Sakura Sunrise and deltaMax have to be unlocked? They've been around since X2; they should have become part of the default songlist since X3 almost five years ago.

They don't, Sakura Sunrise and deltaMAX were unlockable songs for other BEMANI games on the SUMMER DIARY event (BeatStream and REFLEC BEAT respectively).

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Sakura Sunrise and DeltaMAX were songs that crossed over from DDR into other games during the BEMANI SUMMER DIARY event. They are in DDR's default song list (both in the X2 folder.)

Edit: welp, ninja'd

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ok i figured it all out. theres 40 songs total to unlock