Hydra (From "Cytus II")
Akira Complex, James Landino
Hydra
James Landino, Akira Complex
HYDRA
MYTH & ROID
Hydra
Covet
Hydrate
Skrillex, Flowdan, BEAM, Peekaboo
HYDRA(OVERLORD Ⅱ ED) 圈9.ver（Cover MYTH & ROID）
圈9
HYDRA
狐妖Mikan
Summertime Sadness
Within Temptation
Covered by Roses
Within Temptation
River flows In you (DjMrSmith DnB Remix)
Various Artists
HYDRA
LXNGVX, DJ FKU
Let Us Burn
Within Temptation
Hydra
Smith Village Beat Street
HYDRA
Saneyori
Hydra (NEFFEX)
NEFFEX, Blvk Sheep, AMF
Silver Moonlight
Within Temptation
Hydra (Stripped)
Julia Wolfe
Dog Days
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
Whole World is Watching
Within Temptation
Hydra
F-777
Paradise (What about Us)
Within Temptation, Tarja
Tell Me Why
Within Temptation
And We Run
Within Temptation
不认识自己
kxpl, BatHydraEagle, Prod by KK
HYDRA（翻自 MYTH&ROID）
冰镇豆沙君
Hydra
Deniz Koyu
Dangerous
Within Temptation
Hydra
TOTO
Hydra
Rhythmstar & Pawz