Nightwish is a Finnish symphonic metal band formed in 1996 by keyboardist Tuomas Holopainen. They gained international recognition for their unique blend of heavy metal music with orchestral and symphonic elements. Nightwish's breakthrough came with their 2000 album "Wishmaster," which solidified their reputation as one of the pioneering bands in the symphonic metal genre. The band's epic compositions and soaring vocals, led by former vocalists Tarja Turunen and subsequently Anette Olzon and Floor Jansen, have captivated fans around the world. Nightwish's songs often feature fantasy and mythological themes, drawing inspiration from various literary works. They have released multiple successful albums, including "Once" in 2004 and "Imaginaerum" in 2011, and have embarked on numerous world tours, gaining a devoted fan base. Nightwish's iconic symphonic sound combined with their theatrical live performances has established them as one of the leading acts in the genre.