Hydra (From "Cytus II")
Akira Complex, James Landino
HYDRA
MYTH & ROID
Hydra
Covet
Hydra
James Landino, Akira Complex
Paradise (What about Us)
Within Temptation, Tarja
Summertime Sadness
Within Temptation
HYDRA(OVERLORD Ⅱ ED) 圈9.ver（Cover MYTH & ROID）
圈9
HYDRA
狐妖Mikan
Hydra
Celestial Realms
HYDRA（piano ver.）
琳依
Dangerous
Within Temptation
Covered by Roses
Within Temptation
Hydra
F-777
HYDRA
LXNGVX, DJ FKU
Let Us Burn
Within Temptation
And We Run
Within Temptation
Let Her Go
Within Temptation
紫陽花の夜
ねじ式, GUMI
HYDRA
MYTH & ROID
Covered by Roses
Within Temptation
Dog Days
Within Temptation
hydra (long edit)
Betwixt & Between
Whole World is Watching
Within Temptation
HYDRA
Saneyori
Hydra
Rhythmstar & Pawz
Hydra
KVKS, HSHK, VodKa, Pnan
Hydra
阮灰灰
Tramp Like You
Oracle Sisters
Hail Mary
Oracle Sisters
HYDRA（instrumental）
MYTH & ROID