Hydra (From "Cytus II")
Akira Complex, James Landino
HYDRA
MYTH & ROID
HYDRA(OVERLORD Ⅱ ED) 圈9.ver（Cover MYTH & ROID）
圈9
Hydra
James Landino, Akira Complex
Hydrate
Skrillex, Flowdan, BEAM, Peekaboo
HYDRA（piano ver.）
琳依
Hydra
F-777
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
And We Run
Within Temptation
虹色ファンタジア
一咲美葵
Covered by Roses
Within Temptation
Dangerous
Within Temptation
Silver Moonlight
Within Temptation
hydra (long edit)
Betwixt & Between
HYDRA
MYTH & ROID
HYDRA
Ben Monder
I'll Be Waiting
luserista, tree9capone, Hydraxd, berkonjoke
Hydra (Original Mix)
Holl & Rush
Hydra
R. Armando Morabito, Julie Elven, Tina Guo