"A LETTER - Mobile Suit Gundam Unicorn" is a high quality rip of "A LETTER" from Mobile Suit Gundam Unicorn.
At 3:05, a horn and choir line has been added to the track. The choir line and horn proceeds to play these 3 known melodies:
- From 3:12 to 3:14, it's The Nutshack theme.
- At 3:19, it's "GO MY WAY!!".
- From 3:28 to 3:30, it's "Snow halation".
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