I cannot find reliable, widely documented information about a musical artist or band named "Qlas." If this name refers to a lesser-known, underground, or emerging act, public sources do not provide broadly recognized details about country of origin, genre, or period of activity that can be stated with certainty. If you can provide additional context—such as a country, a notable release, or alternate spellings—I can produce a concise encyclopedic description based on verifiable information.