Hydra (From "Cytus II")
Akira Complex, James Landino
Hydra
James Landino, Akira Complex
HYDRA
MYTH & ROID
VORACITY
MYTH & ROID
Hydrate
Skrillex, Flowdan, BEAM, Peekaboo
HYDRA
Saneyori
Hydra
F-777
Summertime Sadness
Within Temptation
Hydra
Covet
Kids
MGMT
HYDRA(OVERLORD Ⅱ ED) 圈9.ver（Cover MYTH & ROID）
圈9
Dangerous
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
Rhythmstar & Pawz
Hydra (NEFFEX)
NEFFEX, Blvk Sheep, AMF
Hydra
Smith Village Beat Street
HYDRA（翻自 MYTH&ROID）
冰镇豆沙君
Hydra
aran
Let Us Burn
Within Temptation
Covered by Roses
Within Temptation
Paradise (What about Us)
Within Temptation, Tarja
hydra (long edit)
Betwixt & Between
Tramp Like You
Oracle Sisters
Hydra
RYLLZ, Milos Loren
Hydra
KVKS, HSHK, VodKa, Pnan
HYDRA
狐妖Mikan
And We Run
Within Temptation
Silver Moonlight
Within Temptation
Dog Days
Within Temptation
Hydra
NLW, Blinders