Hydra (From "Cytus II")
Akira Complex, James Landino
Hydra
James Landino, Akira Complex
HYDRA
MYTH & ROID
HYDRA
Saneyori
Paradise (What about Us)
Within Temptation, Tarja
Hydra (NEFFEX)
NEFFEX, Blvk Sheep, AMF
Hydra
Covet
HYDRA(OVERLORD Ⅱ ED) 圈9.ver（Cover MYTH & ROID）
圈9
Hydra
F-777
Kids
MGMT
【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 (long edit)
Betwixt & Between
Hydra
Rhythmstar & Pawz
Hydra
aran
Hydra
KVKS, HSHK, VodKa, Pnan
Hydra
Smith Village Beat Street
HYDRA
NEPHELIM PULSE
Summertime Sadness
Within Temptation
HYDRA（翻自 MYTH&ROID）
冰镇豆沙君
Tramp Like You
Oracle Sisters
And We Run
Within Temptation
HYDRA
狐妖Mikan
Let Us Burn
Within Temptation
Covered by Roses
Within Temptation
Dangerous
Within Temptation
Hydra
Audiomachine
Summertime Sadness
Within Temptation
不认识自己
kxpl, BatHydraEagle, Prod by KK
Hydra
RYLLZ, Milos Loren
VORACITY
MYTH & ROID