Evanescence is an American rock band founded in 1994 by singer and keyboardist Amy Lee and guitarist Ben Moody in Little Rock, Arkansas. After releasing independent EPs as a duo in the late '90s and a demo CD, Evanescence released their debut studio album, Fallen, on Wind-up Records in 2003. Propelled by the success of hit singles like "Bring Me to Life" and "My Immortal", Fallen sold more than four million copies in the US by January 2004, garnering Evanescence two Grammy Awards out of six nominations. They released their first live album and concert DVD, Anywhere but Home, in 2004, which sold over one million copies worldwide.

Evanescence released their second studio album, The Open Door, in 2006, co-composed by Lee and guitarist Terry Balsamo. It received a Grammy nomination and has sold more than six million copies worldwide. With Balsamo, guitarist Troy McLawhorn, bassist Tim McCord and drummer Will Hunt, the band reconvened in 2009 to work on music for their next album, Evanescence. Released in 2011, it marked the first album co-written as a band. It debuted at the top of the Billboard 200, Rock Albums, Digital Albums, Alternative Albums, and Hard Rock Albums charts. Following the end of the album's tour cycle, the band entered a hiatus.

In 2014, Lee and Evanescence left their record label and became an independent band. The band emerged from hiatus in 2015 and resumed touring, while a new album was not yet created as Lee was also focusing on a solo project. In 2016, Lee stated that Evanescence was working on a fourth album, Synthesis (2017), composed of orchestral and electronica arrangements of their previous material alongside two new songs. Its release was followed by the Synthesis Live tour, in which the band performed with live orchestras for the first time. After pandemic delays, Evanescence released their fifth studio album, The Bitter Truth, in 2021, which reached the top five of the Billboard Independent, Alternative, and Hard Rock charts.

Generally classified as a gothic alternative metal and hard rock band, Evanescence have a diverse sound incorporating various musical styles including classical music, alternative music, heavy metal, industrial music, and electronic music, driven by Lee's contrasting musical pursuits and introspective songwriting. Beginning as a duo partnership, Evanescence had several lineup changes, and became a band collaboration in 2009. The band comprises Lee, guitarist Tim McCord since 2006, guitarist Troy McLawhorn and drummer Will Hunt since 2007, and bassist Emma Anzai since 2022. Among other accolades, Evanescence has received two Grammy Awards, three Loudwire Music Awards, a Kerrang! Award, a Revolver Golden Gods Music Award, a Rock Sound award, a Brit Award nomination, three American Music Award nominations, and five MTV Video Music Award nominations. Evanescence have sold a total of 31.9 million albums, making the band one of the best selling hard rock and metal artists of all time.