This is DLC you can play in Taiko Mode.

*Song: "Senbonzakura"
Easy: ★3 Normal: ★5 Hard: ★6 Extreme: ★7

*Song: "Charles"
Easy: ★4 Normal: ★5 Hard: ★6 Extreme: ★8

*Song: "Asu no Yozora Shoukaihan"
Easy: ★4 Normal: ★6 Hard: ★7 Extreme: ★9

*Song: "Hatsune Miku no Shoushitsu -Gekijouban-"
Easy: ★5 Normal: ★7 Hard: ★8 Extreme: ★9

*Song: "Tooriyo"
Easy: ★3 Normal: ★5 Hard: ★6 Extreme: ★8

*Performing Character: Hatsune Miku

More details on the official game page of Taiko no Tatsujin: Drum 'n' Fun! VOCALOID™ Music Pack ...