Question: who made their debut single "hey Mami" and  had records released by a co-founder of Trekky Records?
Sentence (from "Mami Kawada"): Mami Kawada (川田 まみ , Kawada Mami , born February 13) is a Japanese pop singer who is signed to NBCUniversal Entertainment Japan and is a member of I've Sound, a musical group which produces soundtracks for "eroge" (erotic games) and anime.
Relevant evidence: No