Question: What band did former a former member, who began her singing career in a girl group named Trinity Stone, who was well known for her vocals similar to an American pop singer and top-charting female vocalist of the late 1950s, belong to
Sentence (from "Amina Sato"): Amina Sato (佐藤 亜美菜 , Satō Amina , born October 16, 1990 in Tokyo) , is a former member of the Japanese idol girl group AKB48, now a voice actress.
Relevant evidence: No