Hydra (From "Cytus II")
Akira Complex, James Landino
HYDRA
MYTH & ROID
Hydra
James Landino, Akira Complex
HYDRA
狐妖Mikan
Paradise (What about Us)
Within Temptation, Tarja
Hydra
Covet
HYDRA(OVERLORD Ⅱ ED) 圈9.ver（Cover MYTH & ROID）
圈9
Hydra (Meditation)
Celestial Realms
HYDRA（piano ver.）
琳依
Covered by Roses
Within Temptation
Hydra
Celestial Realms
Summertime Sadness
Within Temptation
Dangerous
Within Temptation
Hydra
F-777
HYDRA
Saneyori
紫陽花の夜
ねじ式, GUMI
Hydra
Rhythmstar & Pawz
And We Run
Within Temptation
HYDRA
MYTH & ROID
HYDRA（instrumental）
MYTH & ROID
十六夜、刻を止めて
玲瓏のHydrangea
HYDRA
LXNGVX, DJ FKU
hydra (long edit)
Betwixt & Between
Hydra
R. Armando Morabito, Julie Elven, Tina Guo
Covered by Roses
Within Temptation
装*(Hydrax Remix)
Hydrax
Hydrangea
Sound Online
Hydra
KVKS, HSHK, VodKa, Pnan
Let Us Burn
Within Temptation
Hydra (Original Mix)
Holl & Rush