This DLC grants access to 10 songs including Touhou original "A Soul as Scarlet as a Ground Cherry"

A Soul as Scarlet as a Ground Cherry (Original Touhou Song)
DA-DA-ON-SEN (feat. Utenkekkou)
Flame of Nuclear (Dankagu Edit)
Sunlight Diamonds (Violet Delta Remix)
Bang Bang!
Vampire Mate
The Replica Sneers
Night Falls　～　Evening Star LSDj Remix (Dankagu Edit)
Lunatic Princess
Who killed U.N.Owen

More details on the official game page of Extra Song Pack 10 ...