坂井泉水
The melodies of early Zard hits were written by prominent Japanese composers, most notably Seiichirō Kuribayashi and Tetsurō Oda. Izumi Sakai wrote nearly all of the lyrics to Zard songs, totalling over one hundred fifty. A veteran recording producer described that while most artists communicate through the transparent glass in the recording studio, Sakai preferred covering the glass with a curtain.