Hydra (From "Cytus II")
Akira Complex, James Landino
Hydra
James Landino, Akira Complex
HYDRA
MYTH & ROID
HYDRA(OVERLORD Ⅱ ED) 圈9.ver（Cover MYTH & ROID）
圈9
HYDRA
狐妖Mikan
Hydra
F-777
Summertime Sadness
Within Temptation
Hydra (NEFFEX)
NEFFEX, Blvk Sheep, AMF
HYDRA（翻自 MYTH&ROID）
冰镇豆沙君
Kids
MGMT
HYDRA
Saneyori
Hydra
Covet
Hydra
Smith Village Beat Street
Hydra
KVKS, HSHK, VodKa, Pnan
Hydra
Grover Washington, Jr.
Hydra
aran
hydra (long edit)
Betwixt & Between
Hydra
Rhythmstar & Pawz
Paradise (What about Us)
Within Temptation, Tarja
Dangerous
Within Temptation
Covered by Roses
Within Temptation
And We Run
Within Temptation
Hydra
Space 92
Hydra (Original Mix)
Holl & Rush
Let Us Burn
Within Temptation
【中文填词】不为人知的鹅妈妈童谣【六人合填】【重音テト】
梁松雪, 珞一不高兴, 水螅-Hydra, 锌轲, HANA, Herllie
HYDRA（piano ver.）
琳依
HYDRA
MYTH & ROID
不认识自己
kxpl, BatHydraEagle, Prod by KK
Hydra
RYLLZ, Milos Loren