(I only tested my guess with the first four songs in the post, but the property I think it is is certainly rare enough that I'll be very surprised if it doesn't turn out to be correct.)
Marble House--the Knife Treat Me Like a Villain--Calm What Is Eternal--Trans-Siberian Orchestra
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Marble House--the Knife
Treat Me Like a Villain--Calm
What Is Eternal--Trans-Siberian Orchestra