I cannot find broadly documented, reliable information about an artist or band named "AssiH, Weyhv351." If this refers to a lesser-known or newly emerging act, available public records do not provide established facts about country of origin, genre, or period of activity that can be stated with confidence. Based on the absence of widely recognized documentation, I cannot produce an encyclopedic description meeting your constraints without risking speculation. If you can provide alternative names, additional context, or confirm public sources, I can create a factual entry from that verified information.