DDR Songs before they were playable

I recently checked out DDR 1stMIX on PSone, and noticed think ya better D was in this game as credits music before itwas playable on CS 2ndReMIX, and later AC 3rdMIX. I'm aware that there are other songs that have popped up throughout the series that were later made playable, so I'm making this thread so everyone can mention those songs and I can make a list here. Please mention the name of the song, and where it first appeared before being playable

LIST:
think ya better D (CS 1stMIX credits, first playable in CS 2ndReMIX)

A US console example:
A Stupid Barber (US MAX2, as Lesson Mode music, first playable in US EXTREME)

List:
think ya better D
[First Seen: Dance Dance Revolution (1stMIX) credits | First Playable: Dance Dance Revolution 2ndReMIX CS]

A Stupid Barber
[First Seen: DDRMAX2: Dance Dance Revolution 7thMIX CS (US) Lesson Mode | First Playable: Dance Dance Revolution EXTREME CS (US)]

Midnight Blaze (SySF Mix)
[First Seen: DDRMAX2: Dance Dance Revolution 7thMIX CS (US) Information Menu | First Playable: DanceDanceRevolution UNIVERSE3]

I Need You (Insideout Door Mix)
[First Seen: Dance Dance Revolution EXTREME CS (US) Information Menu | First Playable: Dance Dance Revolution Party Collection]

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Poseidon is in the credits of DDR Supernova 2 US CS after beating Hyper Master Mode but wasn't playable until DDR X US CS (it appeared in SN2 JP CS though).

Pretty sure there's an entire list of this stuff on remywiki, an entire thread isn't really necessary tbh...........

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Link, please?

I couldn't find one, hence why made a thread...

https://remywiki.com/Later_Appearing_Songs

Although it is a bit incomplete, more incomplete than I remembered it being.

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I've already seen that page before, but that page is for songs that are hidden in the game's data and aren't accessible. What I want to see is songs that do appear in the game in some sort of way without being playable, such as in the credits or as menu music, etc., and later on were made playable or rearranged as a playable song.

Not sure if this counts, but Trim plays as the Advanced Mode BGM in CS Supernova, but (in America) is only playable as DLC.

ftfy

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Found another one. AM-3P -303 BASS MIX- plays during the credits for Japan's CS DDR EXTRA MIX, and was later made playable in US's CS DDR KONAMIX

Feelings Won't Fade is first featured in DDRMAX2's end credits for the PS2. It then became playable in DDR SN2.

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