Hydra
James Landino, Akira Complex
Hydra (From "Cytus II")
Akira Complex, James Landino
HYDRA
MYTH & ROID
Hydra
F-777
Hydra
Covet
HYDRA
狐妖Mikan
Kids
MGMT
hydra (long edit)
Betwixt & Between
Hydra
Celestial Realms
Word Up!
Korn
Hydra (NEFFEX)
NEFFEX, Blvk Sheep, AMF
HYDRA(OVERLORD Ⅱ ED) 圈9.ver（Cover MYTH & ROID）
圈9
Hydra
Smith Village Beat Street
HYDRA（piano ver.）
琳依
HYDRA OGGANG
Hydra
Hydra (Original Mix)
Holl & Rush
Hydra
KVKS, HSHK, VodKa, Pnan
Summertime Sadness
Within Temptation
Hydra
庄司英徳
装*(Hydrax Remix)
Hydrax
Hydra
Rhythmstar & Pawz
HYDRA（翻自 MYTH&ROID）
冰镇豆沙君
Tramp Like You
Oracle Sisters
【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
aran
And We Run
Within Temptation
Paradise (What about Us)
Within Temptation, Tarja
And We Run (feat. Xzibit)
Within Temptation, Xzibit
Summertime Sadness
Within Temptation
Let Us Burn
Within Temptation