Hydra (From "Cytus II")
Akira Complex, James Landino
HYDRA
MYTH & ROID
Hydra
F-777
HYDRA(OVERLORD Ⅱ ED) 圈9.ver（Cover MYTH & ROID）
圈9
And We Run
Within Temptation
Hydra
James Landino, Akira Complex
HYDRA（piano ver.）
琳依
Hydra
Covet
Hydra
Celestial Realms
Summertime Sadness
Within Temptation
HYDRA
狐妖Mikan
Hydra
Rhythmstar & Pawz
紫陽花の夜
ねじ式, GUMI
Paradise (What about Us)
Within Temptation, Tarja
HYDRA
四六時Shirokuji
HYDRA
Saneyori
Let Us Burn
Within Temptation
Hydra
aran
Hydra
VIOZ, HSHK, VodKa, Pnan
Covered by Roses
Within Temptation
虹色ファンタジア
一咲美葵
Dangerous
Within Temptation
Silver Moonlight
Within Temptation
hydra (long edit)
Betwixt & Between
HYDRA
Ben Monder
HYDRA
MYTH & ROID
I'll Be Waiting
luserista, tree9capone, Hydraxd, berkonjoke
Hydra (Original Mix)
Holl & Rush
Hydra
R. Armando Morabito, Julie Elven, Tina Guo
Magnetic (Plume of Smoke Mix)
Jens Buchert