Eri Sugai (菅井えり, Sugai Eri, 1961 – December 21, 2016) was a Japanese vocalist, composer and arranger. She has been compared to Enya in that she "multitracked her voice into angelic choruses, soaring over spare but emotional arrangements", She lent her talents to more than 1,000 television commercials and produced five solo albums. In addition to one under the name of Stella Mirus and two with her husband, Itaru Watanabe, from 2000 until her death.