This is DLC you can play in Taiko Mode.

*Song: "Alborada del gracioso"
Easy: ★5 Normal: ★7 Hard: ★7 Extreme: ★8

*Song: "URBAN FRAGMENTS"
Easy: ★4 Normal: ★4 Hard: ★6 Extreme: ★8

*Song: "Mecha DESU."
Easy: ★4 Normal: ★7 Hard: ★7 Extreme: ★7

*Song: "Diet PADARAISU"
Easy: ★5 Normal: ★5 Hard: ★7 Extreme: ★8

*Song: "NAMAHAGE NO UTA"
Easy: ★4 Normal: ★6 Hard: ★7 Extreme: ★9

More details on the official game page of Taiko no Tatsujin: Drum 'n' Fun! Tatsujin Challenge Pack Vol. 3 ...