Question: The title of a piano arrangement of a Touhou song (Hakurei Reimu's Theme) is:

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> 「東方永夜抄 - Imperishable Night.」 より 博麗霊夢のテーム
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**(Question)** What does `より` do in the title? 

If it were to mean "from the game "Imperishable Night"", would `から` be just as suitable?

Answer: 
`より` as well as `から` means 'from'. This is the primary meaning. Many languages use the word corresponding to 'from' for introducing the standard for a comparative. It is the comparative usage that is the derived meaning.
You are correct that より means from, and can be replaced with から. - rdbより