There are multiple artists who go by the name Pile, the three most prominent being a garage-swamp-pom-pom band from Boston MA, a Japanese female artist and seiyuu, and an electronic duo comprised of the founders of Perlon Records.
1.) Post-hardcore band from Boston, MA. pile.bandcamp.com
2.) Pile is a Japanese Singer and Seiyuu, Her real name is Hori Eriko (堀絵梨子) and she was born in 1988. She released a indies solo single in 2007 called "Your is All. Read more on Last.fm