Biography
There are at least three artists that go by the name of Zas:
Zas (lowercase) - Mostly known for orchestral arrangements of Zelda songs, and other video game music (see Prelude, Lucca's Arrival)
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ZAS - A popular Lithuanian band ŽAS (Žertva Ant Smūgio)
ZAS - An Argentine band of the '80s, led by Miguel Mateos.
Biography text from Last.fm, available under CC BY-SA.