Hydra (From "Cytus II")
Akira Complex, James Landino
HYDRA
MYTH & ROID
Hydra
James Landino, Akira Complex
HYDRA(OVERLORD Ⅱ ED) 圈9.ver（Cover MYTH & ROID）
圈9
HYDRA
狐妖Mikan
Hydra
Covet
HYDRA（piano ver.）
琳依
Summertime Sadness
Within Temptation
Hydra
F-777
Covered by Roses
Within Temptation
Paradise (What about Us)
Within Temptation, Tarja
Hydra (Meditation)
Celestial Realms
HYDRA
MYTH & ROID
Hydra
Celestial Realms
Dangerous
Within Temptation
Hydra
Rhythmstar & Pawz
紫陽花の夜
ねじ式, GUMI
And We Run
Within Temptation
HYDRA
Saneyori
Hydra
R. Armando Morabito, Julie Elven, Tina Guo
HYDRA（instrumental）
MYTH & ROID
Let Us Burn
Within Temptation
Hail Mary
Oracle Sisters
Silver Moonlight
Within Temptation
Dog Days
Within Temptation
hydra (long edit)
Betwixt & Between
Covered by Roses
Within Temptation
Hydra
NLW, Blinders
HYDRA
LXNGVX, DJ FKU
Tramp Like You
Oracle Sisters