Axxis & Kosta Zafiriou -- Wind In The Night + interview

Tourleben mit Helloween & Festivalpower in Karlsruhe – Kosta Zafiriou im Interview!

Pink Cream 69 -- Kosta & David interview

Kosta Zafiriou | Keseimbangan Lagu Unisonic #shorts #unisonic #quotes

Pink Cream 69- Size it Up, Live in Japan `92 (Full concert)

Unisonic - King for a Day/ March of Time and more... 2012 (DVD-R)

Andi & Kosta interview