Simplify the following text for a Grade 3 native English-speaking person.
Original: The group has had several members , but currently only Akko ( Akiko Kobayashi å æ -- ä å å , born Akamatsu è æ 3\/4 ) the vocalist , remains .
Simplified: The member is Akko ( Real name is Akiko Nakamatsu . è æ 3\/4 ä å å ) .