暮蟬悲鳴時
is the first single of Eiko Shimamiya under I've Sound and Geneon Entertainment label. Released on May 24, 2006 and reached #18 in the Oricon weekly charts. It has sold an approximate total of 35,000 copies and stayed in the charts for 26 weeks making this Eiko's most selling and longest charting single to date. The title track was used as the opening theme for the first season of the anime series "Higurashi When They Cry", and was also used as the ending theme of the first episode of . Composition wise, it is written in the key of E Minor.