Eriko Hori (堀 絵梨子, Hori Eriko; born 2 May 1988), better known by her stage name Pile, is a Japanese singer, actress and voice actress from Tokyo. Her first roles were minor parts in TV series and films during 2006. She debuted as a singer after she was selected in a 2006 Japan-wide audition and she made her voice acting debut in the Love Live! School Idol Project series in 2010.
Source: “Pile (singer)”, English Wikipedia (CC BY-SA 4.0), excerpt