Aimer A female singer of a deep husky voice that can never be unheard, Aimer made her major debut in 2011 with the single “Rokutousei no Yoru”. Her fourth album daydream, released in September 2016 and features her signature track “Cho-Cho Musubi”, achieved #1 on iTunes’ album chart. In April 2021 she released her sixth studio album Walpurgis that marked her first triple #1s on Billboard Japan’s Hot Albums, Download Albums, and Top Album Sales charts, drawing even more popularity.