Evanescence is an American rock band founded in Little Rock, Arkansas in 1995 by singer/pianist Amy Lee and guitarist Ben Moody. After recording private albums, the band released their first full-length album, Fallen, on Wind-up Records in 2003. Fallen sold more than 15 million copies worldwide and helped the band win two Grammy Awards. A year later, Evanescence released their first live album, Anywhere but Home, which sold more than one million copies worldwide. In 2006, the band released their second studio album, The Open Door, which sold more than five million copies.

The line-up of the band has changed several times: David Hodges leaving in 2002, co-founder Moody left in 2003 (mid-tour), bassist Will Boyd in 2006, followed by guitarist John LeCompt and drummer Rocky Gray in 2007. The last two changes led to a hiatus, with temporary band members contributing to tour performances. In June 2009, it was announced on the Evanescence website that the band was working on new material for a third studio album for release in the second half of 2010.

Evanescence was founded by singer, pianist and songwriter Amy Lee and former lead guitarist and songwriter Ben Moody. The two met in 1994 at a youth camp in Little Rock, where Moody heard Lee playing "I'd Do Anything for Love (But I Won't Do That)" by Meat Loaf on the piano. Their first songs together were "Solitude" and "Give Unto Me", both written by Lee, and "Understanding" and "My Immortal", both written by Moody. The songs were edited by both artists, and they shared equal credit.

Two of Lee and Moody's songs were played on local radio stations, raising local awareness of the group and demand for a concert. The band eventually appeared live, and became one of the most popular acts in the area. After experimenting with band names, such as Childish Intentions and Stricken, they decided on Evanescence, which means "disappearance" or "fading away" (from the word evanesce, which means "to disappear").

The band released two EPs. The first is the self-titled Evanescence EP (1998), of which about 100 copies were made and distributed at the band's early live performances. The second is the Sound Asleep EP, also known as the Whisper EP (1999). For their first full-length demo CD, Origin, about 2,500 copies were produced and sold to concert audiences. Origin and the EPs contain demo versions of some of the songs on their debut album, Fallen. During a radio interview, Lee and Moody encouraged fans to download the band's older songs from the Internet.

Critics vary in terming Evanescence a rock or metal band, but most identify them as some form of gothic band: Publications such as The New York Times, Rough Guides, Rolling Stone and Blender have identified Evanescence as a gothic metal act, while other sources such as NME, MusicMight, IGN and Popmatters have termed them gothic rock. They have been compared to a variety of bands from differing genres, such as nu metal ensembles like P.O.D. and Linkin Park, gothic metal groups like Lacuna Coil, and symphonic metal acts like Nightwish and Within Temptation. David Browne of Blender offers an elaborate description of the band's music as "goth Christian nü-metal with a twist of melancholic Enya." Adrien Begrand of Popmatters describes Evanescence as utilising "nu-metal riffage". Adrian Jackson of My Dying Bride stated that he feels Evanescence is doing something similar to his own gothic metal group, only in a more commercial direction. Other genres and influences used to describe the band’s sound include alternative metal, alternative rock, hard rock, and electronica.

Evanescence was originally promoted in Christian stores. Later, the band made it clear they did not want to be considered part of the Christian rock genre. Terry Hemmings, CEO of Christian music distributor Provident, expressed puzzlement at the band's about-face, saying "They clearly understood the album would be sold in these channels." After many Christian stores began to remove the band's music from their shelves, Wind-up Records chairman Alan Meltzer then issued a press release in April 2003 requesting formally that they do this. In 2006, Amy Lee told Billboard that she had opposed being identified as a "Christian band" from the beginning.