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（piano ver.）
琳依
Hydra (Meditation)
Celestial Realms
Covered by Roses
Within Temptation
Hydra
Celestial Realms
Summertime Sadness
Within Temptation
Dangerous
Within Temptation
Hydra
F-777
HYDRA
Saneyori
And We Run
Within Temptation
紫陽花の夜
ねじ式, GUMI
Hydra
Rhythmstar & Pawz
HYDRA（instrumental）
MYTH & ROID
HYDRA
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
Hydrangea
Sound Online
Hail Mary
Oracle Sisters
Hydra
KVKS, HSHK, VodKa, Pnan
Let Us Burn
Within Temptation
Hydra (Original Mix)
Holl & Rush