This is DLC you can play in Taiko Mode.

*Song: "Night of Nights"
Easy: ★4 Normal: ★6 Hard: ★7 Extreme: ★9

*Song: "Tsuki ni Murakumo"
Easy: ★4 Normal: ★5 Hard: ★6 Extreme: ★8

*Song: "Kero⑨ Destiny"
Easy: ★4 Normal: ★6 Hard: ★6 Extreme: ★9

More details on the official game page of Taiko no Tatsujin: Drum 'n' Fun! Touhou Project Arrangements Pack ...